BIOCHEM ACS STUDYGUIDE [ACTUAL 100%] ALREADY GRADED A+ WITH QUESTIONS AND ANSWERS

BIOCHEM ACS STUDYGUIDE [ACTUAL 100%] ALREADY GRADED A+ WITH QUESTIONS AND ANSWERS In plant and animal cells, the three-dimensional integrity of the cell is maintained, in part, by an internal network of filaments called A. the cell wall. B. the Golgi apparatus. C. the cytoskeleton. D. the endoplasmic reticulum. - ANS---C Each of the following subcellular structures contains DNA EXCEPT A. the nucleus. B. ribosomes. C. chloroplasts. D. mitochondria. - ANS---B Of the following, which are prokaryotes? A. viruses B. bacteria C. yeast D. plant cells - ANS---B G° for the conversion of glycerol-3-phosphate to glycerol + Pi is -2.2 kcal/mole. Thus, you can conclude that A. this reaction will occur spontaneously. B. this reaction may or may not occur spontaneously, depending on the actual concentrations of reactants and products. C. this reaction will only occur spontaneously if it is coupled to another reaction that has a more favorable G°. D. this reaction is so strongly favorable that it could be coupled to drive an otherwise unfavorable cell reaction. - ANS---B According to the Second Law of Thermodymnamics, A. the total entropy change in any reaction that occurs spontaneously must be greater than 0. B. the total entropy change in any reaction that occurs spontaneously must be less than 0. C. the total entropy of the universe remains constant. D. the total entropy of the universe is always decreasing. - ANS---A Which of the following is true?