1. Passage Reading
2. Verbal Logic
3. Non Verbal Logic
4. Numerical Logic
5. Data Interpretation
6. Reasoning
7. Analytical Ability
8. Quantitative Aptitude
298. (d) describe an alternative hypothesis and provide evidence and arguments that support it (Because the author has provided an alternative hypothesis to caffine's effect of" inhibition of the production of phosphodiesterase" by citing evidence of "Snyder et al" and then supports it by the experiment on the mouse)
299. (d) The concentration of caffeine required to dislodge adenosine from its receptors in the human brain is much greater than the concentration that produces behavioral stimulation in humans (Because the second para states that "Snyder et al point out that the caffeine concentrations needed to inhibit the production of phosphodiesterase in the brain are much higher than those that produce stimulation")
300. (d) permits release of neurotransmitters when it is bound to adenosine receptors, whereas adenosine inhibits such release (Because the first para tells that "Adenosine normally depresses neuron firing in many areas of the brain. It apparently does this by inhibiting the release of neurotransmitters")
301. (a) mixed effects in the brain (Because the last para tells that "The problem is that the compound has mixed effects in the brain, a not unusual occurrence with psychoactive drugs")
302. (d) II and III only (Because the second para states that "Moreover, other compounds that block phosphodiesterase’s activity are not stimulants" and "caffeine concentrations needed to inhibit the production of phosphodiesterase in the brain are much higher than those that produce stimulation")
303. (c) phosphodiesterase (Because the second para tells that "phosphodiesterase, an enzyme that breaks down the chemical called cyclic AMP" and the other three have been mentioned to bind tospecific receptors)
304. (b) The structural relationship between caffeine and adenosine (Because the first para states that "Snyder et al propose that caffeine, which is structurally similar to adenosine, is able to bind to both types of receptors")
305. (b) summarize a major finding of their experiments (Because the second para states that "But Snyder et al point out that the caffeine concentrations needed to inhibit the production of phosphodiesterase in the brain are much higher than those that produce stimulation" as if it is a major finding of their experiments)
306. (a) Describes a disconfirming experimental result and reports the explanation given by Snyder et al in an attempt to reconcile this result with their theory (Because " compound called 3-isobutyl-1- methylxanthine (IBMX), which bound very well but actually depressed mouse locomotion." and "Snyder et al suggests that this is not a major stumbling block to their hypothesis" as if it is a major finding of their experiment")
Passage Reading
Verbal Logic
Non Verbal Logic
Numerical Logic
Data Interpretation
Reasoning
Analytical Ability
Basic Numeracy
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