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The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.
Which of the following, if true, best reconciles the apparent discrepancy described above?
  • a)
    When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.
  • b)
    The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.
  • c)
    The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.
  • d)
    The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.
  • e)
    Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.
Correct answer is option 'E'. Can you explain this answer?
Most Upvoted Answer
The retinas of premature babies are not fully developed at birth. Beca...
(A) When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.
This option suggests that the inherent developmental state of premature babies' retinas makes them vulnerable to damage when exposed to light and air outside the womb. This helps explain why premature babies may lose their sight despite improved prevention methods.
(B) The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies' retinas, but the oxygen is now administered in less damaging concentrations than it used to be.
This option explains that although oxygen administration is necessary for premature babies, it can have a damaging effect on their retinas. The improvement in prevention methods includes administering oxygen in lower, less damaging concentrations. However, it suggests that even with these improvements, some babies may still experience retinal damage and lose their sight.
(C) The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.
This option acknowledges that controlling the exposure of premature babies to light and oxygen can help reduce the effects of retinopathy of prematurity but does not offer complete prevention. It suggests that despite implementing these control measures, some babies may still develop the syndrome and lose their sight.
(D) The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.
This option suggests that although there have been improvements in preventing retinopathy of prematurity, the process has been gradual. It implies that there may be further knowledge or advancements needed to completely prevent the syndrome. This helps explain why the proportion of babies losing their sight has increased despite the improvements made so far.
(E) Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than other premature babies and are more apt to lose their sight.
This option points out that improved medical technology is now able to save the lives of premature babies who would not have survived in the past. However, it also states that these saved babies have even more delicate retinas than other premature babies. This increased delicacy makes them more susceptible to losing their sight, providing an explanation for the increased proportion of babies experiencing retinopathy of prematurity.
In summary, option (E) provides the most direct and specific explanation for the increased proportion of premature babies losing their sight despite improvements in prevention methods.
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Directions: Read the Passage carefully and answer the question as follow.Caffeine, the stimulant in coffee, has been called“the most widely used psychoactive substance on Earth .”Synder, Daly and Bruns have recently proposed thatcaffeine affects behavior by countering the activity in(5) the human brain of a naturally occurring chemical calledadenosine. Adenosine normally depresses neuron firingin many areas of the brain. It apparently does this byinhibiting the release of neurotransmitters, chemicalsthat carry nerve impulses from one neuron to the next.(10) Like many other agents that affect neuron firing,adenosine must first bind to specific receptors onneuronal membranes. There are at least two classesof these receptors, which have been designated A1 andA2. Snyder et al propose that caffeine, which is struc-(15) turally similar to adenosine, is able to bind to both typesof receptors, which prevents adenosine from attachingthere and allows the neurons to fire more readily thanthey otherwise would.For many years, caffeine’s effects have been attri-(20) buted to its inhibition of the production of phosphodi-esterase, an enzyme that breaks down the chemicalcalled cyclic AMP.A number of neurotransmitters exerttheir effects by first increasing cyclic AMP concentra-tions in target neurons. Therefore, prolonged periods at(25) the elevated concentrations, as might be brought aboutby a phosphodiesterase inhibitor, could lead to a greateramount of neuron firing and, consequently, to behav-ioral stimulation. But Snyder et al point out that thecaffeine concentrations needed to inhibit the production(30) of phosphodiesterase in the brain are much higher thanthose that produce stimulation. Moreover, other com-pounds that block phosphodiesterase’s activity are notstimulants.To buttress their case that caffeine acts instead by pre-(35) venting adenosine binding, Snyder et al compared thestimulatory effects of a series of caffeine derivatives withtheir ability to dislodge adenosine from its receptors inthe brains of mice. “In general,” they reported, “theability of the compounds to compete at the receptors(40) correlates with their ability to stimulate locomotion inthe mouse; i.e., the higher their capacity to bind at thereceptors, the higher their ability to stimulate locomo-tion.” Theophylline, a close structural relative of caffeineand the major stimulant in tea, was one of the most(45) effective compounds in both regards.There were some apparent exceptions to the generalcorrelation observed between adenosine-receptor bindingand stimulation. One of these was a compound called3-isobuty1-1-methylxanthine(IBMX), which bound very(50) well but actually depressed mouse locomotion. Snyderet al suggest that this is not a major stumbling block totheir hypothesis. The problem is that the compound hasmixed effects in the brain, a not unusual occurrence withpsychoactive drugs. Even caffeine, which is generally(55) known only for its stimulatory effects, displays thisproperty, depressing mouse locomotion at very low concentrations and stimulating it at higher ones.Q.According so Snyder et al, caffeine differs from adenosine in that caffeine

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The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. Can you explain this answer?
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The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. Can you explain this answer? for GMAT 2024 is part of GMAT preparation. The Question and answers have been prepared according to the GMAT exam syllabus. Information about The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. Can you explain this answer? covers all topics & solutions for GMAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. Can you explain this answer?.
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Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. 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Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. Can you explain this answer?, a detailed solution for The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. 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Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.Which of the following, if true, best reconciles the apparent discrepancy described above?a)When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.b)The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.c)The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.d)The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.e)Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.Correct answer is option 'E'. 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