48. What type of pathway do athletes' bodies undergo when they do sprints/quick bursts of energy? a. Cellular respiration b. Alcoholic fermentation c. Lactic acid fermentation d. None of the above 49. is the byproduct of a. Ethyl alcohol, lactic acid fermentation b. Lactic acid, lactic acid fermentation c. Pyruvic acid, alcoholic fermentation d. None of the above 50. Xavier and Jill are practicing the 100-meter sprint.Which statement BEST describes the metabolic pathways their muscles will utilize to produce the quick energy needed for this intense exercise? a. Glucose is converted to pyruvic acid, followed by the aerobic pathways of the Krebs cycle and the electron transport chain. b. Glycolysis produces pyruvic acid and 2 molecules of ATP, then in the absence of oxygen, alcoholic fermentation regenerates NAD" to keep glycolysis running. c. The pyruvic acid from glycolysis enters the mitochondria and is broken down in the Krebs cycle. d. Glycolysis begins glucose metabolism and in the absence of oxygen, lactic acid fermentation takes over. . 51. releases energy faster than a. Cellular respiration, fermentation b. Alcoholic fermentation, lactic acid fermentation -ermentation, cellular respiration d. Lactic acid fermentation, alcoholic fermentation 52. __ Why are aerobic exercises good for weight control? a.It breaks down muscle cells b. It creates excess pyruvic acid c. It builds up lactic acid d. It breaks down stored fat cells

Question

48. What type of pathway do athletes' bodies undergo when they do sprints/quick bursts of energy? a. Cellular respiration b. Alcoholic fermentation c. Lactic acid fermentation d. None of the above 49. is the byproduct of a. Ethyl alcohol, lactic acid fermentation b. Lactic acid, lactic acid fermentation c. Pyruvic acid, alcoholic fermentation d. None of the above 50. Xavier and Jill are practicing the 100-meter sprint.Which statement BEST describes the metabolic pathways their muscles will utilize to produce the quick energy needed for this intense exercise? a. Glucose is converted to pyruvic acid, followed by the aerobic pathways of the Krebs cycle and the electron transport chain. b. Glycolysis produces pyruvic acid and 2 molecules of ATP, then in the absence of oxygen, alcoholic fermentation regenerates NAD" to keep glycolysis running. c. The pyruvic acid from glycolysis enters the mitochondria and is broken down in the Krebs cycle. d. Glycolysis begins glucose metabolism and in the absence of oxygen, lactic acid fermentation takes over. . 51. releases energy faster than a. Cellular respiration, fermentation b. Alcoholic fermentation, lactic acid fermentation -ermentation, cellular respiration d. Lactic acid fermentation, alcoholic fermentation 52. __ Why are aerobic exercises good for weight control? a.It breaks down muscle cells b. It creates excess pyruvic acid c. It builds up lactic acid d. It breaks down stored fat cells

Answer 1

48. c. Lactic acid fermentation49. b. Lactic acid, lactic acid fermentation50. d. Glycolysis begins glucose metabolism, and in the absence of oxygen, lactic acid fermentation takes over.51. c. Fermentation, cellular respiration52. d. It breaks down stored fat cells

Answer 2

## Question 48:The question is asking about the metabolic pathway that an athlete's body will implement during high-intensity, short-duration exercises, like sprinting. The metabolic pathway that provides fast energy in short bursts is lactic acid fermentation. This process occurs in the muscles during intense exercise when the body's energy needs outstrip its oxygen supply.## Question 49:The question is asking about the byproduct of a certain metabolic pathway. Lactic acid is the byproduct of lactic acid fermentation, which occurs in the muscles during intense exercise when the body's energy needs outstrip its oxygen supply.## Question 50:The question is asking about the metabolic pathways that Xavier and Jill's muscles will implement while executing a high-intensity, assuming short-duration exercise, like sprinting 100 meters. The metabolic pathway that provides fast energy in short bursts is glycolysis and lactic acid fermentation. This process occurs in the muscles during intense exercise when the body's energy needs outstrip its oxygen supply.## Question 51:The question is asking about which metabolic pathway releases energy faster. Fermentation, including lactic acid fermentation, releases energy faster than cellular respiration. This is because fermentation does not require oxygen and can therefore provide energy quickly during intense exercise.## Question 52:The question is asking why aerobic exercises are good for weight control. Aerobic exercises are good for weight control because they break down stored fat cells. This is because aerobic exercises require a lot of energy, which the body obtains by breaking down stored fat cells.

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