Carbohydrate problems
- 1. A common way that cells capture the energy released during the breakdown of large molecules is to add electrons to smaller, specialized molecules that can accept them. This process of electron acceptance is otherwise known as
Options- A. biosynthesis
- B. metabolism
- C. reduction
- D. catalysis Discuss
Correct Answer: reduction
- 2. Two major products of pentose phosphate pathway are
Options- A. nicotinamide adenine dinucleotide and ribose 5-phosphate
- B. flavine adenine dinuclueotide and glucose 5-phosphate
- C. FAD and CoA
- D. NADPH and NAD Discuss
Correct Answer: nicotinamide adenine dinucleotide and ribose 5-phosphate
- 3. Gluconeogenesis requires a higher amount of ATP equivalents as compared to that produced by glycolysis because
Options- A. gluconeogenesis releases energy as heat
- B. glycolysis releases energy as heat
- C. glycolysis occurs in the mitochondria while gluconeogenesis occurs in the cytosol
- D. all of the above Discuss
Correct Answer: glycolysis releases energy as heat
- 4. In lysozyme catalysis, which of the following does not contribute?
Options- A. The abnormally high pKa of Glu35
- B. The strained conformation of the D sugar
- C. Formation of a covalent intermediate at Asp52
- D. Formation of a covalent intermediate at Ser195 Discuss
Correct Answer: Formation of a covalent intermediate at Ser195
- 5. What is present in the stomach to prevent self-digestion?
Options- A. Mucus
- B. acid
- C. Enzymes
- D. hormones Discuss
Correct Answer: Mucus
- 6. Storage polysaccharide made by animals is
Options- A. amylopectin
- B. glycogen
- C. cellulose
- D. collagen Discuss
Correct Answer: glycogen
- 7. Cellulose fibers resemble with the protein structure in the form of
Options- A. ?-sheets
- B. ?-helices
- C. ?-turns
- D. None of these Discuss
Correct Answer: ?-sheets
- 8. A catabolic intermediate which stimulates phosphofructokinase would stimulate
Options- A. gluconeogenesis
- B. glycolysis
- C. glycogen synthesis
- D. none of these Discuss
Correct Answer: glycolysis
- 9. During vigorous exercise, pyruvate produced by glycolysis is converted to
Options- A. acetate
- B. lactate
- C. monosodium phosphate
- D. pyruvic acid Discuss
Correct Answer: lactate
- 10. Which of the following can act as precursors for gluconeogenesis?
Options- A. Lactate
- B. Glycerol
- C. Alanine
- D. All of these Discuss
Correct Answer: All of these
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