Chapter 20 Testbank - Chapter 20 Carbohydrate Biosynthesis...

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Chapter 20 Carbohydrate Biosynthesis in Plants and Bacteria Multiple Choice Questions 1. Photosynthetic carbohydrate synthesis Page: 775 Difficulty: 1 Ans: C The compound that condenses with CO 2 in the first reaction of carbon dioxide assimilation is: A) 3-phosphoglycerate. B) ribose 1,5-bisphosphate. C) ribulose 1,5-bisphosphate. D) ribulose 5-phosphate. E) rubisco. 2. Photosynthetic carbohydrate synthesis Pages: 779-780 Difficulty: 2 Which of these enzymes is not part of the Calvin cycle? 3. Photosynthetic carbohydrate synthesis Pages: 780-781 Difficulty: 2 Transketolase requires the coenzyme: 4. Photosynthetic carbohydrate synthesis Page: 780 Difficulty: 2 When transketolase acts on fructose 6-phosphate and glyceraldehyde 3-phosphate, the products are:
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Carbohydrate Biosynthesis in Plants and Bacteria 5. Photosynthetic carbohydrate synthesis Page: 782 Difficulty: 1 Ans: C Which of these compounds is not directly involved in the Calvin cycle? A) Erythrose 4-phosphate B) Glyceraldehyde 3-phosphate C) Mannose 6-phosphate D) Ribulose 5-phosphate E) Sedoheptulose 7-phosphate 6. Photosynthetic carbohydrate synthesis Page: 782 Difficulty: 2 In the carbon assimilation (“dark”) reactions of photosynthesis, the biosynthesis of 1 mol of hexose from 6 mol of carbon dioxide requires: 7. Photosynthetic carbohydrate synthesis Pages: 784, 789 Difficulty: 3 The known mechanisms of activation of rubisco or of other enzymes of the Calvin cycle during illumination include all of the following except:
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