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311C F11 Exam3PQ - Bio311C Exam 3 Practice Questions...

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Bio311C Exam 3: Practice Questions Multiple Choice. 1. Integrins are transmembrane proteins that interact with the extracellular matrix and the cytoskeleton. When the integrin protein is first synthesized, on which side of the ER membrane will the cytoskeleton-binding domain be found? a. It will be on the cytoplasmic side of the ER. b. It will be on the side facing the interior of the ER. c. It could be facing in either direction because the orientation of proteins is scrambled later on. d. It doesn't matter, because the integrin is not active in the ER. e. Not enough information is provided to answer this question. 2. The role of oxygen in our cells is to 3. Which statement about pyruvate is not true? 4. Phosphofructokinase is an allosteric enzyme that catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate, an early step of glycolysis. In the presence of oxygen, an increase in the amount ATP in a cell would be expected to 5. What is the oxidizing agent in the following reaction: Acetaldehyde + NADH + H+ Ethanol + NAD+ a. Acetaldehyde b. NADH + H+ c. Ethanol d. NAD+ 6. Which of the following statements is (are) correct about an oxidation-reduction (or redox) reaction? 7. One function of both alcohol fermentation and lactic acid fermentation is to
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