Which of the following statements about glucose metabolism is correct? Select one: Oa. Red blood cells can catalyze aerobic glycolysis because they contain oxygen bound to hemoglobin. O b. Glycolysis can proceed in the absence of oxygen only if pyruvate is formed from lactate in muscle. All of the reactions of glycolysis are freely reversible for gluconeogenesis. d. Red blood cells can only metabolize glucose by anaerobic glycolysis and the pentose phosphate pathway.

Which of the following statements about glucose metabolism is correct? Select one: Oa. Red blood cells can catalyze aerobic glycolysis because they contain oxygen bound to hemoglobin. O b. Glycolysis can proceed in the absence of oxygen only if pyruvate is formed from lactate in muscle. All of the reactions of glycolysis are freely reversible for gluconeogenesis. d. Red blood cells can only metabolize glucose by anaerobic glycolysis and the pentose phosphate pathway.

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter11: Digestion And Nutrition

Section: Chapter Questions

Problem 9SQ: Basal metabolic rate is a measure of ______. a. the total amount of calories you burn in 24 hours b....

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Which of the following statements about glucose metabolism is correct? A. Glucagon increases the rate of glycolysis B. Glycolysis requires NADP+ C. In glycolysis, glucose is cleaved into two three-carbon product D. The end-product of glycolysis in red blood cells is pyruvate E. Glycogen is synthesized in the liver in response to insulin and exported to other tissues for use as a metabolic fuel
For an individual whose liver is regulated to have gluconeogenesis on and glycolysis off, when energy is needed - what is the major carbon source used to produce acetyl CoA? a. amino acids b. glyoxylate c. glucose d. fatty acids
Citrate, an intermediate in the TCA cycle, affects the activity of the enzyme phosphofructokinase, the enzyme that catalyzes the third step of glycolysis. Based on the expected logic of feedback in metabolism, which of the following is likely true? a. Citrate inhibits phosphofructokinase b. Phosphofructokinase inhibits citrate c. There is no logical reason for feedback to exist in this case d. Citrate activates phosphofructokinase
When unlimited energy (glucose = 100 and fat = 100) is available and pyruvate processing is inhibited (100%), the citric acid cycle (CAC) runs at a _________ rate. a, Low (1 - 30%) b, Stops (1% or less) c, Moderate (31 - 70%) d, High (71 - 100%)
Which of the following can undergo metabolic conversion to acetyl CoA and enter the citric acid cycle? A. Fatty acids B. All of the choices are correct. C. Protein D. Glucose
Which of the following statements concerning the location of the metabolic pathways is correct? a. All reactions of the glycolysis take place in the mitochondria. b. All reactions of the TCA cycle take place in the mitochondria. c. Some reactions of the TCA cycle take place in the cytosol, and some in mitochondria. d. Some reactions of the glycolysis take place in the cytosol, and some in mitochondria.
After strenuous exercise, you may notice that your muscles burn and feel sore the next day. Which statement best explains this phenomenon? (a) Proteins in muscle cells are being digested to provide energy. (b) Carbon dioxide is building up in muscle cells and changing their pH. (c) Spontaneous combustion occurs during strenuous exercise, so avoid it at all costs! (d) ATP is accumulating in muscle cells, causing a burning sensation. (e) Without adequate oxygen, muscle cells are fermenting pyruvate into lactic acid.
Concerning the process of the aerobic fate of glucose oxidation, which of the following statements is false? a. The spontaneous movement of protons is coupled to the unfavorable movement of electrons through the electron transport chain b. Pyruvate is recognized by a pyruvate/proton symporter for movement into the matrix of the mitochondria c. The matrix of the mitochondria is more negative than the inner membrane space d. Mitochondria contain two membranes, only the inner mitochondrial membrane is highly selective for what passes across it e. The movement of protons through ATP synthase drive the production of ATP
Which of the following is FALSE about glycolysis? a. The pathway axidizes two moles of NADH to NAD* for each mole of glucose. b. The pathway requires two moles of ATP to get started catabolizing each mole of glucose. c. ADP is phosphorylated to ATP via substrate -level phosphorylation. d. The pattivay produces pyruvate as one of its products.
Which of the following are the final by-products of glucose oxidation during aerobic cellular respiration? A. carbon dioxide and water only B. ATP, heat, carbon dioxide, and water C. heat only D. both ATP and heat only E. ATP only
a) How many moles of ATP can be gained from the catabolism of the following substrates to pyruvate? 2 Mole mannose 2 Mole lactose mole glycerol. b) Name three metabolic processes in the cell that are enhanced and two that are inhibited in response to the hormone insulin
Which of the following statements describing the mobilization and utilization of fatty acids in the body is INCORRECT? Answers A-E A. Fatty acids are excellent fuels for skeletal muscle. B. On a molar basis, fatty acid oxidation to carbon dioxide and water yields more ATP than do carbohydrates C. It is Coenzyme A derivatives of fatty acids that are beta-oxidized D. Fatty acids are transported in plasma bound to albumin E. Fatty acid oxidation to carbon dioxide and water does not require a functional Krebs cycle