Two university students studied different types of drugs for their exams. Kate studied statins, while Carol studied anti-depressants. Which student learned more about inducing the expression of low density lipoprotein (LDL) receptors in the liver?
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Answer: Kate

This year scientist found concrete evidence of existence of black holes by taking photograph of one. Unfortunately, the originator of black hole theory, Stephen Hawking, was never awarded a Nobel prize despite letting science advance in big leap because his theory could not be verified during his lifetime. On the other hand, scientist B has received Nobel prize because he has based his theory on the earlier theory of scientist A. Would scientist A increased our understanding of the world more or less than scientist B?
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Answer: less

Dan found three rattle snakes: one only had one rattle, the second snake had 4 rattles and the third snake had seven rattles on its tail. Which snake was older, the first or the third snake Dan found?
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Answer:
the third