This test includes verbal section of GRE practice test-01. Good Luck!
GRE Verbal Test-01
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Question 1 |
In parts of the Arctic, the land grades into the landfast ice so ________ that you can walk off the coast and not know you are over the hidden sea.
A | Permanently |
B | Imperceptibly |
C | Irregularly |
D | Precariously |
E | Continuously |
Question 2 |
An investigation that is ________ can occasionally yield new facts even notable ones, but typically the appearance of such facts is the result of a search in a guided direction.
A | Timely |
B | Unguided |
C | Consistent |
D | Uncomplicated |
E | Subjective |
Question 3 |
It comes as no surprise that societies have codes of behavior; the character of the codes, on the other hand, can often be _________.
A | Predictable |
B | Admirable |
C | Unexpected |
D | Confusing |
E | Garrulous |
Question 4 |
This island is a colony; however, in most matters it is ________ and receives no orders from the mother country.
A | Audacious |
B | Contentious |
C | Autonomous |
D | Indifference |
E | Appease |
Question 5 |
In stark contrast to his later ______, Simpson was largely indifferent _______ politics during his college years, despite the fact that the campus he attended was rife with political activity.

A | a & d |
B | a & e |
C | a & f |
D | b & d |
E | b & e |
F | b & f |
G | c & d |
H | c & e |
I | c & f |
Question 6 |
His ________ for acquiring unique art objects led him to commit an act of crime as _______ has no limit.

A | a & d |
B | a & e |
C | a & f |
D | b & d |
E | b & e |
F | b & f |
G | c & d |
H | c & e |
I | c & f |
Question 7 |
While antibiotics have done inestimable good to humankind over the last seventy years, there are several drawbacks to using antibiotics that, until recently, have been overlooked. The human microbiome, which consists of the trillions of bacteria that reside in each person’s body, is essential to good health. Specifically, the body contains and requires both “good” and “bad” bacteria. It is when the proper equilibrium between the “good” bacteria and the “bad” bacteria is disrupted that a number of health issues can emerge. Nonetheless, antibiotics indiscriminately kill both the “good” and the “bad” bacteria, so each course of antibiotics should be followed by a treatment that _________.
Which of the following most logically completes the argument above?
A | bypasses the microbiome altogether |
B | targets and eliminates only the “bad” bacteria |
C | restores the correct balance between the “good” and “bad” bacteria |
D | purges the body of the remaining antibiotics |
E | completely reverses any effects from the antibiotics |
Question 8 |
A coffee manufacturer wants more restaurant chains to serve its brands of coffee. The manufacturer is considering a plan to offer its coffee to large chains at a significantly lower price, at least for a certain period. This lower price initially will reduce the manufacturer's profits, but they hope to get into enough nationwide restaurant chains that their volume increases significantly. Once they have a much higher volume, even a small increase in their price would have an enormous effect on their profits.
In evaluating the plan's chances of success, it would be most helpful to know which of the following?
A | Whether their discounted price is lower than the prices of the coffee manufacturers who currently provide coffee to these nationwide restaurant chains. |
B | Whether the manufacturer will use the same shipping system as it has been using to ship coffee to restaurants across the country. |
C | Whether the prices of some mixes of coffee will be discounted more than the prices of others. |
D | Whether the coffee manufacturer will be able to cut costs associated with advertising to maintain a strong profit margin even with the lower prices. |
E | Whether an alternate plan would allow the coffee manufacturer to take greater profits from the restaurant chains to which it currently provides coffee. |
Question 9 |
In 1887, Eugene Dubois began his search in Sumatra for the “missing link”—the being that would fill the evolutionary gap between ape and man. He discovered a fossilized human-like thighbone and a section of skull. He confirmed that these fossils were of significant age by examining other fossils in the same area. The thighbone’s shape indicated that it belonged to a creature that walked upright. Dubois estimated the size of the creature’s skull from the skull fragment and concluded that this creature’s brain volume was between that of the higher primates and that of current humans. Although the concept of “missing link” has changed dramatically and a recent analysis showed Dubois’s fossils to be far too recent for humans to have evolved from this “missing link,” the value of his discovery and the debate it generated is unquestionable.
The passage supplies information to answer which of the following questions? (Indicate all correct answers)
A | What was the approximate age of the fossils found by Dubois? |
B | Does Dubois’s find meet current definitions of the “missing link”? |
C | Do the flaws in Dubois’s conclusions invalidate his work? |
Question 10 |
In a certain state, over 80% of the land is made up of farms, but historically, large farm machinery has not sold well in this state. The percentage of land devoted to farms is not expected to increase. In fact, the number of farms in the state has been slowly declining over the past decade. A new manufacturer of large farm equipment is building a factory in the middle of this state, and the manufacturer's plans for success depend on strong in-state sales of its product. Both the manufacturer and the industry analysts expect this manufacturer to be quite successful over the next few years.
Which of the following, if true, most helps to provide a justification for the manufacturer's and the industry analysts' optimistic expectations?
A | Land previously owned by small, independent farmers has been bought up and consolidated into large industrial farms, which have a much greater need of large farm equipment. |
B | The manufacturer's new factory will be on or close to five different railroad lines, and is expected to have a beneficial impact on the struggling rail transport industry in the state. |
C | The percentage of food imported into the state, from other states and from other countries, has increased significantly over the past 20 years. |
D | The number of models of large farm machinery this manufacturer will offer is larger than the number of models offered by most other comparable manufacturers of large farm machinery. |
E | Some crops grown in this state, like corn, enjoy substantial government subsidies and find a robust market in the food processing industries. |
Question 11 |
Although it does contain some new ideas, one would hardly characterize the work as _________. (Please select two choices)
A | Orthodox |
B | Eccentric |
C | Original |
D | Trifling |
E | Conventional |
F | innovative |
Question 12 |
A misconception frequently held by novice writers is that sentence structure mirrors thought: the more convoluted the structure, the more ________ the ideas. (Please select two choices)
A | Complicated |
B | Engaged |
C | Essential |
D | Fanciful |
E | Inconsequential |
F | involved |
Question 13 |
A born trickster, he was as inclined to _________ as an embezzler is inclined to fraud. (Please select two choices)
A | Audacious |
B | Chicanery |
C | Coward |
D | Ingenuity |
E | Timid |
F | Candor |
Question 14 |
Although no two siblings could have disagreed more in nature---where she was gregarious, he was introverted; where she was outspoken, he was __________ the twins nevertheless got on amazingly well. (Please select two choices)
A | Reserved |
B | Discreet |
C | Garrulous |
D | Fluent |
E | Verbose |
F | Imprudent |
Question 15 |
According to most scientists, the universe began approximately 10 to 15 billion years ago and has been expanding ever since. This theory, known as the Big Bang theory, is the fairly direct result of Hubble’s law, which states that objects farther away from Earth are receding faster than those closer. This expansion implies a singular point which all matter is expanding from.
Complicating the scientific explanation is that the Big Bang cannot be thought of as an explosion from some identifiable source—rather, space and time were created in the Big Bang. Furthermore, the relationship between distance and speed is not precisely linear. So, if one were to think of galaxies as particles created in a big bang, these galaxies have both a local component of motion, as well as playing a role in the overall expansion of the universe.
A further complication is that galactic distances are so great that galactic motion, even if the galaxies are moving at incredible speeds, is difficult to observe. Scientists must therefore rely on a “standard candle,” an object of known brightness within the galaxy they wish to observe. Using the inverse square law, scientists can then measure how far that galaxy is away from our own. For instance, suppose a supernova in galaxy A appears one hundred times as bright as one in galaxy B. By the inverse square law, galaxy B is ten times farther away than galaxy A, assuming, of course, that distance is the only factor affecting brightness.
It can be inferred from the sentence highlighted in the passage that a standard candle is useful to scientists for which of the following reasons?
A | Standard candles do not have their own locus of motion. |
B | Standard candles more reliably adhere to the law of inverse squares than do other supernovas. |
C | Only standard candles provide a known measure of brightness. |
D | Knowledge of an object’s brightness allows scientists to measure the speed at which the object is moving toward Earth. |
E | Knowledge of an object’s brightness allows scientists to accurately measure its distance from Earth. |
Question 16 |
According to most scientists, the universe began approximately 10 to 15 billion years ago and has been expanding ever since. This theory, known as the Big Bang theory, is the fairly direct result of Hubble’s law, which states that objects farther away from Earth are receding faster than those closer. This expansion implies a singular point which all matter is expanding from.
Complicating the scientific explanation is that the Big Bang cannot be thought of as an explosion from some identifiable source—rather, space and time were created in the Big Bang. Furthermore, the relationship between distance and speed is not precisely linear. So, if one were to think of galaxies as particles created in a big bang, these galaxies have both a local component of motion, as well as playing a role in the overall expansion of the universe.
A further complication is that galactic distances are so great that galactic motion, even if the galaxies are moving at incredible speeds, is difficult to observe. Scientists must therefore rely on a “standard candle,” an object of known brightness within the galaxy they wish to observe. Using the inverse square law, scientists can then measure how far that galaxy is away from our own. For instance, suppose a supernova in galaxy A appears one hundred times as bright as one in galaxy B. By the inverse square law, galaxy B is ten times farther away than galaxy A, assuming, of course, that distance is the only factor affecting brightness.
According to the passage, if two astronomical objects of differing distances from Earth were observed, which of the following would be true of the object closer to Earth? (Select all correct answers)
A | It would not be as bright as the object farther from Earth. |
B | It would be younger than the object farther from Earth. |
C | It would be traveling away from the Earth more slowly than the farther object. |
Question 17 |
According to most scientists, the universe began approximately 10 to 15 billion years ago and has been expanding ever since. This theory, known as the Big Bang theory, is the fairly direct result of Hubble’s law, which states that objects farther away from Earth are receding faster than those closer. This expansion implies a singular point which all matter is expanding from.
Complicating the scientific explanation is that the Big Bang cannot be thought of as an explosion from some identifiable source—rather, space and time were created in the Big Bang. Furthermore, the relationship between distance and speed is not precisely linear. So, if one were to think of galaxies as particles created in a big bang, these galaxies have both a local component of motion, as well as playing a role in the overall expansion of the universe.
A further complication is that galactic distances are so great that galactic motion, even if the galaxies are moving at incredible speeds, is difficult to observe. Scientists must therefore rely on a “standard candle,” an object of known brightness within the galaxy they wish to observe. Using the inverse square law, scientists can then measure how far that galaxy is away from our own. For instance, suppose a supernova in galaxy A appears one hundred times as bright as one in galaxy B. By the inverse square law, galaxy B is ten times farther away than galaxy A, assuming, of course, that distance is the only factor affecting brightness.
It can be inferred from the passage that a standard candle may not provide an accurate measure of distance if
A | the galaxy being measured is moving too quickly |
B | interstellar dust makes the object measured appear dimmer than it really is |
C | if the galaxy being measured has a local component of measurement |
D | the particles being measured do not completely accord with a linear motion |
E | the galaxies being measured move at different speeds |
Question 18 |
According to most scientists, the universe began approximately 10 to 15 billion years ago and has been expanding ever since. This theory, known as the Big Bang theory, is the fairly direct result of Hubble’s law, which states that objects farther away from Earth are receding faster than those closer. This expansion implies a singular point which all matter is expanding from.
Complicating the scientific explanation is that the Big Bang cannot be thought of as an explosion from some identifiable source—rather, space and time were created in the Big Bang. Furthermore, the relationship between distance and speed is not precisely linear. So, if one were to think of galaxies as particles created in a big bang, these galaxies have both a local component of motion, as well as playing a role in the overall expansion of the universe.
A further complication is that galactic distances are so great that galactic motion, even if the galaxies are moving at incredible speeds, is difficult to observe. Scientists must therefore rely on a “standard candle,” an object of known brightness within the galaxy they wish to observe. Using the inverse square law, scientists can then measure how far that galaxy is away from our own. For instance, suppose a supernova in galaxy A appears one hundred times as bright as one in galaxy B. By the inverse square law, galaxy B is ten times farther away than galaxy A, assuming, of course, that distance is the only factor affecting brightness.
According to the passage, if two supernovas are observed and one of those supernovas is brighter than the other, scientists can conclude that
A | the brighter supernova is moving closer to our galaxy at a higher speed |
B | the precise location of the supernova is measurable |
C | the brighter supernova may be closer to our own galaxy |
D | the brighter supernova is farther away from Earth by a distance that is roughly inversely proportional to the dim supernova |
E | the distance between the supernovas and our own galaxy is inversely proportional |
Question 19 |
Neurobiologists have never questioned that axon malfunction plays a role in neurological disorders, but the nature of the relationship has been a matter of speculation. George Bartzokis’s neurological research at UCLA suggests that many previously poorly understood disorders such as Alzheimer’s disease may be explained by examining the role of the chemical compound myelin.
Myelin is produced by oligodendrocyte cells as a protective sheathing for axons within the nervous system. As humans mature and their neurochemistries grow more complex, oligodendrocyte cells produce increasing amounts of myelin to protect the byzantine circuitry inside our nervous systems. An apt comparison may be to the plastic insulation around copper wires. Bereft of myelin, certain areas of the brain may be left vulnerable to short circuiting, resulting in such disorders as ADHD, schizophrenia, and autism.
It can be inferred from the passage that the author would be most likely to agree with which of the following statements regarding the role of myelin? (Indicate all correct answers)
A | The levels of myelin in the brain can contribute to the neurological health of individuals. |
B | Increasing the levels of myelin in the brain can reverse the effects of neurological damage. |
C | The levels of myelin in the brain are not fixed throughout the lifetime of an individual. |
Question 20 |
Neurobiologists have never questioned that axon malfunction plays a role in neurological disorders, but the nature of the relationship has been a matter of speculation. George Bartzokis’s neurological research at UCLA suggests that many previously poorly understood disorders such as Alzheimer’s disease may be explained by examining the role of the chemical compound myelin.
Myelin is produced by oligodendrocyte cells as a protective sheathing for axons within the nervous system. As humans mature and their neurochemistries grow more complex, oligodendrocyte cells produce increasing amounts of myelin to protect the byzantine circuitry inside our nervous systems. An apt comparison may be to the plastic insulation around copper wires. Bereft of myelin, certain areas of the brain may be left vulnerable to short circuiting, resulting in such disorders as ADHD, schizophrenia, and autism.
In the context in which it appears, byzantine most nearly means
A | Devious |
B | Intricate |
C | Mature |
D | Beautiful |
E | Electronic |
Question 21 |
You may take 5 minutes brake if you want,and then start from onward questions!
Normally an individual thunderstorm lasts about 45 minutes, but under certain conditions the storm may __________, becoming even more severe, for as long as four hours.
A | Equivocate |
B | Reticent |
C | Disappear |
D | Moderate |
E | Persist |
Question 22 |
With his new two hour minute heavy weight lifting record broke a psychological barrier, and inspired thousands of others to attempt to overcome seemingly _________ hurdles.
A | Insurmountable |
B | Enervate |
C | Trivial |
D | Traumatic |
E | Eclectic |
Question 23 |
The game of chess is an example of a ________ information system: the pieces sit inertly on the board until the players move them according to known rules.
A | Arduous |
B | Repository |
C | Passive |
D | Disruptive |
E | Active |
Question 24 |
The tapeworm is an example of _________ organism, one that lives within or on another creature, _________ some or all of its nutrients from its host.

A | a & d |
B | a & e |
C | a & f |
D | b & d |
E | b & e |
F | b & f |
G | c & d |
H | c & e |
I | c & f |
Question 25 |
The publishers, unwilling to ________ the entire risk, insisted that the author pay half the cost of the initial print run of his _______ new book.

A | a & d |
B | a & e |
C | a & f |
D | b & d |
E | b & e |
F | b & f |
G | c & d |
H | c & e |
I | c & f |
Question 26 |
Although he was finally ________, the years of ________ tore apart his social circle, ruined his health and ________ his mind.

A | a, d & g |
B | a, d & h |
C | a, d & i |
D | a, e & g |
E | a, e & h |
F | a, e & i |
G | a, f & g |
H | a, f & h |
I | a, f & i |
J | b, d & g |
K | b, d & h |
L | b, d & i |
M | b, e & g |
N | b, e & h |
O | b, e & i |
P | b, f & g |
Q | b, f & h |
R | b, f & i |
S | c, d & g |
T | c, d & h |
U | c, d & i |
V | c, e & g |
W | c, e & h |
X | c, e & i |
Y | c, f & g |
Z | c, f & h |
c, f & i |
Question 27 |
In economics, a "Veblen good" is an item which people buy in greater quantity when the price goes up. According to the law of supply and demand, when the price of an ordinary item goes up, demand drops, i.e. people buy fewer of them. A Veblen good is a luxury item to which status is attached, such as a designer outfit or luxury car. As the price of such an item increases, its prestige increases, which makes the item that much more desirable. Therefore, as the price increases, the demand also increases, and more of these items are sold.
In the argument, the two portions in boldface play which of the following roles?
A | This first is a piece of evidence supporting the main conclusion; the second is the main conclusion. |
B | The first is a view that the author opposes; the second is the main conclusion. |
C | The first is a prediction; the second gives evidence for this prediction. |
D | The first is a general rule, the violation of which seems to indicate a paradox; the second is the resolution of that apparent paradox. |
E | The first is an ironic description of what could happen in the marketplace; the second is a more realistic description of what actually happens. |
Question 28 |
Insect behavior generally appears to be explicable in terms of unconscious, inflexible stimulus-response mechanisms. For instance, a female sphex wasp leaves her egg sealed in a burrow alongside a paralyzed grasshopper, which her larvae can eat upon hatching. Before she deposits the grasshopper in the burrow, she inspects the burrow; if the inspection reveals no problems, she drags the grasshopper inside by its antennae. As thoughtful as this behavior appears, it reveals its mechanistic character upon interference. Darwin discovered that prior removal of the grasshopper's antennae prevents the wasp from depositing the grasshopper, even though the legs or ovipositor could also serve as handles. Likewise, Fabre moved the grasshopper a few centimeters away from the burrow's mouth while the wasp was inside inspecting. The wasp returned the grasshopper to the edge of the burrow and then began a new inspection. Fabre performed this disruptive maneuver forty times; the wasp's response never changed.
The primary purpose of the passage is to __________.
A | prove, based on examples, that insects lack consciousness |
B | argue that insects are unique in their dependence on rigid routines |
C | analyze the maternal behavior of wasps |
D | compare and contrast the work of Darwin and Fabre |
E | argue that insect behavior relies on rigid routines which appear to be unconscious |
Question 29 |
Insect behavior generally appears to be explicable in terms of unconscious, inflexible stimulus-response mechanisms. For instance, a female sphex wasp leaves her egg sealed in a burrow alongside a paralyzed grasshopper, which her larvae can eat upon hatching. Before she deposits the grasshopper in the burrow, she inspects the burrow; if the inspection reveals no problems, she drags the grasshopper inside by its antennae. As thoughtful as this behavior appears, it reveals its mechanistic character upon interference. Darwin discovered that prior removal of the grasshopper's antennae prevents the wasp from depositing the grasshopper, even though the legs or ovipositor could also serve as handles. Likewise, Fabre moved the grasshopper a few centimeters away from the burrow's mouth while the wasp was inside inspecting. The wasp returned the grasshopper to the edge of the burrow and then began a new inspection. Fabre performed this disruptive maneuver forty times; the wasp's response never changed.
The author mentions the work of Darwin and Fabre in order to
A | provide experimental evidence of the inflexibility of one kind of insect behavior |
B | contradict the conventional wisdom about “typical” wasp behavior |
C | illustrate the strength of the wasp's maternal affection |
D | explore the logical implications of the thesis articulated earlier |
E | highlight historical changes in the conduction of scientific research |
Question 30 |
Insect behavior generally appears to be explicable in terms of unconscious, inflexible stimulus-response mechanisms. For instance, a female sphex wasp leaves her egg sealed in a burrow alongside a paralyzed grasshopper, which her larvae can eat upon hatching. Before she deposits the grasshopper in the burrow, she inspects the burrow; if the inspection reveals no problems, she drags the grasshopper inside by its antennae. As thoughtful as this behavior appears, it reveals its mechanistic character upon interference. Darwin discovered that prior removal of the grasshopper's antennae prevents the wasp from depositing the grasshopper, even though the legs or ovipositor could also serve as handles. Likewise, Fabre moved the grasshopper a few centimeters away from the burrow's mouth while the wasp was inside inspecting. The wasp returned the grasshopper to the edge of the burrow and then began a new inspection. Fabre performed this disruptive maneuver forty times; the wasp's response never changed.
The passage supports which of the following statements about insect behavior?
A | Reptiles such as snakes behave more flexibly than do insects. |
B | Insects such as honeybees can always be expected to behave inflexibly. |
C | Many species of insects leave eggs alongside living but paralyzed food sources. |
D | Stimulus-response mechanisms in insects have evolved because, under ordinary circumstances, they help insects to survive. |
E | More than one species of insect displays inflexible, routine behaviors. |
Question 31 |
Far from being an innocent prank, their action is a ________ attempt to spoil my reputation. (Please select two choices)
A | Malicious |
B | Salubrious |
C | Sanguine |
D | Naïve |
E | Ingenuity |
F | Callous |
Question 32 |
Although his findings were initially greeted with _________, the unlikely hero was finally vindicated (free from blame) when the French academy acknowledged his work. (Please select two choices)
A | derision |
B | accolades |
C | commendations |
D | sympathy |
E | zealot |
F | ridicule |
Question 33 |
Grandfather liked us children to learn self-discipline, and, unlike many others of his generation, seldom _________ us even for those actions that we felt deserve criticism. (Please select two choices)
A | Rewarded |
B | Applauded |
C | Censure |
D | Cherished |
E | Appease |
F | Castigate |
Question 34 |
Fraser taught by example: he _________ using too many words in his own lecture and berated his students for any tendency toward long-windedness. (Please select two choices)
A | Embraced |
B | Accept |
C | Shunned |
D | Welcomed |
E | Eschewed |
F | Embellish |
Question 35 |
In 1798, economist Thomas Robert Malthus stated in his “Essay on the Principle of Population” that “population increases in a geometric ratio, while the means of subsistence increases in an arithmetic ratio.” However, Malthus’s dire prediction of a precipitous decline in the world’s population has not come to pass. The miscalculations in what has come to be known as the Malthus Doctrine are partly due to Malthus’s inability to foresee the innovations that allowed vast increases in worldwide wheat production.
In the late nineteenth century, the invention of the tractor staved off a Malthusian disaster. While the first tractors were not particularly powerful, the replacement of animals by machinery meant that land that had been devoted to hay and oats could now be reclaimed for growth of crops for human consumption. Nevertheless, the Malthusian limit might still have been reached if crop yield had not been increased.
A natural way to increase crop yield is to supply the soil with additional nitrogen. In 1909, chemist Fritz Haber succeeded in combining nitrogen and hydrogen to make ammonia, the white powder version of which, when added to the soil, improves wheat production. Haber nitrogen, however, was not widely used until later in the twentieth century, largely due to farmers’ resistance to spreading an unnatural substance on their crops. Haber’s invention had a further drawback: If applied in incorrect quantities, the wheat crop would grow taller and thicker, eventually toppling over and rotting.
Interestingly, in the late twentieth century the discovery of genetic engineering, which provides a means of increasing rice and maize production, met with equal resistance, this time from the environmental movement. Even without direct genetic engineering, it is likely that science will discover new methods to improve agricultural production.
According to the passage, which of the following is true about Haber nitrogen?
A | Haber nitrogen is more effective at increasing the yield of wheat crops than that of maize or oat crops. |
B | Undesired effects can result from the application of surplus quantities of Haber nitrogen. |
C | Haber nitrogen was the first non-naturally occurring substance to be applied to crops as fertilizer. |
D | Haber nitrogen may not be effective if applied at an improper time in wheat’s growth cycle. |
E | Farmers were quick to adopt Haber nitrogen because it made their crops grow taller and thicker. |
Question 36 |
In 1798, economist Thomas Robert Malthus stated in his “Essay on the Principle of Population” that “population increases in a geometric ratio, while the means of subsistence increases in an arithmetic ratio.” However, Malthus’s dire prediction of a precipitous decline in the world’s population has not come to pass. The miscalculations in what has come to be known as the Malthus Doctrine are partly due to Malthus’s inability to foresee the innovations that allowed vast increases in worldwide wheat production.
In the late nineteenth century, the invention of the tractor staved off a Malthusian disaster. While the first tractors were not particularly powerful, the replacement of animals by machinery meant that land that had been devoted to hay and oats could now be reclaimed for growth of crops for human consumption. Nevertheless, the Malthusian limit might still have been reached if crop yield had not been increased.
A natural way to increase crop yield is to supply the soil with additional nitrogen. In 1909, chemist Fritz Haber succeeded in combining nitrogen and hydrogen to make ammonia, the white powder version of which, when added to the soil, improves wheat production. Haber nitrogen, however, was not widely used until later in the twentieth century, largely due to farmers’ resistance to spreading an unnatural substance on their crops. Haber’s invention had a further drawback: If applied in incorrect quantities, the wheat crop would grow taller and thicker, eventually toppling over and rotting.
Interestingly, in the late twentieth century the discovery of genetic engineering, which provides a means of increasing rice and maize production, met with equal resistance, this time from the environmental movement. Even without direct genetic engineering, it is likely that science will discover new methods to improve agricultural production.
The passage implies all of the following EXCEPT
A | world food production has kept pace with world population growth |
B | technological innovation is one factor that allowed for an increase in crop production |
C | farmers are not the only group that has opposed artificial efforts to increase crop yield. |
D | the Malthusian limit might well have been reached if new methods to increase crop production had not been found |
E | a Malthusian disaster would have been ensured if it were not for the invention of genetic engineering. |
Question 37 |
In 1798, economist Thomas Robert Malthus stated in his “Essay on the Principle of Population” that “population increases in a geometric ratio, while the means of subsistence increases in an arithmetic ratio.” However, Malthus’s dire prediction of a precipitous decline in the world’s population has not come to pass. The miscalculations in what has come to be known as the Malthus Doctrine are partly due to Malthus’s inability to foresee the innovations that allowed vast increases in worldwide wheat production.
In the late nineteenth century, the invention of the tractor staved off a Malthusian disaster. While the first tractors were not particularly powerful, the replacement of animals by machinery meant that land that had been devoted to hay and oats could now be reclaimed for growth of crops for human consumption. Nevertheless, the Malthusian limit might still have been reached if crop yield had not been increased.
A natural way to increase crop yield is to supply the soil with additional nitrogen. In 1909, chemist Fritz Haber succeeded in combining nitrogen and hydrogen to make ammonia, the white powder version of which, when added to the soil, improves wheat production. Haber nitrogen, however, was not widely used until later in the twentieth century, largely due to farmers’ resistance to spreading an unnatural substance on their crops. Haber’s invention had a further drawback: If applied in incorrect quantities, the wheat crop would grow taller and thicker, eventually toppling over and rotting.
Interestingly, in the late twentieth century the discovery of genetic engineering, which provides a means of increasing rice and maize production, met with equal resistance, this time from the environmental movement. Even without direct genetic engineering, it is likely that science will discover new methods to improve agricultural production.
Which of the following, if true, would best represent Malthus’ contention in the first paragraph?
A | By 2040 the world’s population increases marginally, and food production keeps pace with demand. |
B | By 2040 the world’s population decreases marginally, and food production outstrips demand. |
C | By 2040 the world’s population remains unchanged, and food production declines slightly. |
D | By 2040 the world’s population has significantly increased, and food production has increased slightly. |
E | By 2040 the world’s population has significantly decreased, and food production has decreased slightly. |
Question 38 |
In 1798, economist Thomas Robert Malthus stated in his “Essay on the Principle of Population” that “population increases in a geometric ratio, while the means of subsistence increases in an arithmetic ratio.” However, Malthus’s dire prediction of a precipitous decline in the world’s population has not come to pass. The miscalculations in what has come to be known as the Malthus Doctrine are partly due to Malthus’s inability to foresee the innovations that allowed vast increases in worldwide wheat production.
In the late nineteenth century, the invention of the tractor staved off a Malthusian disaster. While the first tractors were not particularly powerful, the replacement of animals by machinery meant that land that had been devoted to hay and oats could now be reclaimed for growth of crops for human consumption. Nevertheless, the Malthusian limit might still have been reached if crop yield had not been increased.
A natural way to increase crop yield is to supply the soil with additional nitrogen. In 1909, chemist Fritz Haber succeeded in combining nitrogen and hydrogen to make ammonia, the white powder version of which, when added to the soil, improves wheat production. Haber nitrogen, however, was not widely used until later in the twentieth century, largely due to farmers’ resistance to spreading an unnatural substance on their crops. Haber’s invention had a further drawback: If applied in incorrect quantities, the wheat crop would grow taller and thicker, eventually toppling over and rotting.
Interestingly, in the late twentieth century the discovery of genetic engineering, which provides a means of increasing rice and maize production, met with equal resistance, this time from the environmental movement. Even without direct genetic engineering, it is likely that science will discover new methods to improve agricultural production.
Which of the following most nearly means the word precipitous, as used in context?
A | Anticipated |
B | Deliberate |
C | Gradual |
D | Risky |
E | Sharp |
Question 39 |
One of the most curious structures in cellular biology is the telomere, a length of repeated bases located at the end of every chromosome that, unlike the rest of the DNA strand, carries no useful genetic information. While the telomere seems on the surface to be nothing more than a useless afterthought of DNA, a closer look proves that it is not only important, but also crucial to the functioning of any organism. Indeed, without this mundane structure, every cell division would be a step into senescence, and the onset of old age would begin at birth.
Scientists have found that during cell division not every base of the DNA strand can be replicated, and many, especially those near the end, are lost. If, instead of telomeres, our chromosomes stored valuable genetic information at the end of the DNA strand, then cell division would cause our cells to lose the ability to code for certain information. In fact, many ailments associated with normal old age begin only after the telomere buffer has been exhausted through years of cell division.
Which of the following can reasonably be inferred based on the passage? (Select all correct answers)
A | An individual who aged faster than the average person may have had a shorter telomere buffer than the average person. |
B | Scientists once believed that telomeres served no useful purpose. |
C | If DNA degradation were absent, then telomeres would be less important to human health. |
Question 40 |
One of the most curious structures in cellular biology is the telomere, a length of repeated bases located at the end of every chromosome that, unlike the rest of the DNA strand, carries no useful genetic information. While the telomere seems on the surface to be nothing more than a useless afterthought of DNA, a closer look proves that it is not only important, but also crucial to the functioning of any organism. Indeed, without this mundane structure, every cell division would be a step into senescence, and the onset of old age would begin at birth.
Scientists have found that during cell division not every base of the DNA strand can be replicated, and many, especially those near the end, are lost. If, instead of telomeres, our chromosomes stored valuable genetic information at the end of the DNA strand, then cell division would cause our cells to lose the ability to code for certain information. In fact, many ailments associated with normal old age begin only after the telomere buffer has been exhausted through years of cell division.
The passage suggests that if telomere buffers did not exist
A | problems associated with aging would begin earlier in life |
B | people would age so rapidly that almost no one would live past childhood |
C | cellular senescence would probably be prevented by DNA bases |
D | chromosomes would lose the ability to store genetic codes |
E | DNA strands would contain only useful genetic information |
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