Mcat Practice Questions Study Guide Questions And Correct Answers

What stage of protein synthesis does NOT require energy? A. Initiation B. Elongation C. Termination D. All stages of protein synthesis require energy {Ans: Answer: D}Which of the following best explains why glutamic acid is less soluble than glycine in water at a neutral pH? Please click on the correct answer: A. Glutamic acid is more acidic. B. Glutamic acid does not dissociate in water. C. Glutamic acid is larger and more hydrophobic than glycine. D. Glutamic acid has more nitrogen atoms. {Ans: Answer: C Glutamic acid is only slightly soluble in water in large part due to its hydrophobic tail acidic group at the end. Although the acidic group is present, it is not strongly acidic and the hydrophobic nature of the tail outweighs any enhanced solubility effect otherwise afforded by a carboxylic acid. Thus the correct answer is (C). (B) is incorrect because some dissociation does occur. (D) is incorrect because it is untrue and the presence of nitrogen atoms does not directly impact solubility.}Which of the following is FALSE regarding the fight-or-flight response? A. The fight-or-flight response can be described as being part of the sympathetic nervous system. B. The fight-or-flight response can cause a