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• 8. Penicillin suppresses bacterial infections by__? (A) stimulating a person's immune system；(B
• 9. Which one is the function of the nucleolus? (A) protein synthesis；(B) transport of material into
• 10. Which of the following organelles are also cellular digestion centers? (A) lysosomes and Golgi a
• 11. Which statement about the cytoskeleton is NOT correct? (A) a system of tracks used for intracell
• 12. Oxidation means__? (A) the loss of electrons from a molecule；(B) the loss of oxygen by a cell； (
• 13. Coupled reactions are reactions in which a__? (A) exergonic reaction drives an endergonic reacti
• 14. Enzymes speed chemical reactions by__? (A) supplying energy to the reaction process；(B) raising
• 15. Competitive inhibition of enzymes occurs__? (A) when a substance binds to an enzyme at a site aw
• 16. Which statement about simple diffusion is correct? (A) does not require energy；(B) utilizes prot
• 17. If an animal cell has a greater concentration of solute than its environment, the cell__? (A) wi
• 18. The molecular reactants for photosynthesis are__? (A) glucose and carbon dioxide；(B) glucose and
• 19. Your liver produces 90% of the cholesterol found in your body. When cholesterol levels get too h
• 20. Which of the following is NOT a net product or reactant of photosynthesis? (A) oxygen；(B) glucos
• 21. The main reason that cellular aerobic respiration needs to occur step by step instead of a singl
• 22. During glycolysis molecules of glucose are__? (A) broken down in oxidation, liberating the carbo
• 23. The Krebs cycle runs__? (A) six times for each glucose, because each carbon pulled from the orig
• 24. Fermentation is most common in__? (A) fungi, decomposing dead plants；(B) human muscle cells；(C)
• 25. Glycolysis does not require__? (A) oxygen；(B) ATP；(C) NAD+；(D) glucose.
• 26. Muscle cells use lactic acid fermentation to__? (A) allow an animal to survive for long periods
• 27. The first steps in glycolysis involve__? (A) reducing glucose；(B) both the addition of two phosp
• 28. The net ATP production in glycolysis is only two because__? (A) two ATPs are used to \"act
• 29. The \"Central Dogma\" refers to__? (A) passage of genetic information from RNA to sp
• 30. The statement that does not correctly associate an RNA type, and its function, is__? (A) complem
• 31. A DNA sequence that signals a gene's start is a(n)__? (A) amino acid attachment site；(B) pr
• 32. A three-base sequence (loop) in tRNA that is complementary to a sequence of three bases in mRNA