16. Which of the following statements about sterols is true?(A)Cholesterol is the principal sterol in fungi.(B)Sterols are found in the membranes of all living cells.(C) Sterols are soluble in water, but less so in organic solvents such as chloroform.(D)All sterols share a fused-ring structure with four rings.(E) The principal sterol of animal cells is ergosterol.

9. Which of the following statements is true of the glycolytic pathway?(A)Each reaction in the glycolytic pathway is catalyzed by a single enzyme, acetyl CoA dehydrogenase.(B)In each reaction in the pathway, one molecule of ATP is hydrolyzed for each molecule of glucose that is metabolized.(C)In each reaction in the glycolytic pathway, two NADP molecules are released that make coupled exergonic reactionspossible.(D)Each reaction has a net gain of three ATP molecules for each glucose molecule processed in glycolysis.

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