When oxygen is unavailable during heavy exercise, muscle cells use _____ to generate energy.
When oxygen is unavailable during heavy exercise, muscle cells use _____ to generate energy.
Homework Answers
When oxygen is unavailable during heavy exercise, muscle cells use anaerobic respiration (lactic acid fermentation) to generate energy.
During heavy exercise, the muscle cells need higher amount of energy which require high amount of oxygen. Thus, in absence of oxygen, muscle cell perform anaerobic respiration in which pyruvate obtained from glycolysis converted into lactate. This process, is known as lactic acid fermentation, does not generate more energy. However, it does replenish some of the cofactors needed to keep the process of glycolysis going during anaerobic respiration and thus, quick energy is supplied in the form of ATP to the muscle cells through glycolysis.
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When oxygen is unavailable during heavy exercise, muscle cells
use _____ to generate energy.
During exercise when the body lacks an adequate supply of oxygen to support energy production, the...
During exercise when the body lacks an adequate supply of oxygen to support energy production, the pyruvate that is produced from the breakdown of glucose is converted into lactate. High lactate levels can lead to acidity in the muscle cells as some of the lactate hydrolyzes to lactic acid. The dissociation of lactic acid to lactate is shown in the reaction. Lactic acid has a p?a of 3.86. Lactic acid dissociates into the lactate ion and a hydrogen ion. The...
During exercise when the body lacks an adequate supply of oxygento support energy production, the...
During exercise when the body lacks an adequate supply of oxygen
to support energy production, the pyruvate that is produced from
the breakdown of glucose is converted into lactate. High lactate
levels can lead to acidity in the muscle cells as some of the
lactate hydrolyzes to lactic acid.The dissociation of lactic acid to lactate is shown in the
reaction. Lactic acid has a pKa of 3.86
Skeletal muscle cells derive much of their energy from glucose, especially during anaerobic periods of strenuous...
Skeletal muscle cells derive much of their energy from glucose, especially during anaerobic periods of strenuous exercise. Briefly describe the glycolysis pathway, including the high-energy molecules generated under this condition
74) Human muscle cells may produce lactic acid when they run out of oxygen.
74) Human muscle cells may produce lactic acid when they run out of oxygen.
During high-intensity exercise such as sprinting or lifting a very heavy weight, energy is provided to...
During high-intensity exercise such as sprinting or lifting a
very heavy weight, energy is provided to cells by the phosphogen
system (or ATP-PC system), which only works for a few seconds. If
the diffusion constant of ATP is 3 ×10−10 m2 s-1, how far could
this molecule diffuse in 8.3 seconds?
OH O سے OH -P-O-P-O-P-O-CH - s ATP: Ci His NsO, 2/3 NH Adenosine triphosphate (ATP) is a molecule that is often used to transfer chemical energy within cells...
1. How can hemoglobin deliver oxygen to myoglobin in muscle tissue cells? (use oxygen binding curve,...
1. How can hemoglobin deliver oxygen to myoglobin in muscle tissue cells? (use oxygen binding curve, T-state and R-state, sigmoidal, cooperativity, Bohr effect, carbon dioxide, and 2,3-BPG)
97) If we cannot get enough oxygen to the muscle cells, what happens? a) The muscle...
97) If we cannot get enough oxygen to the muscle cells, what happens? a) The muscle cell stops contracting. b) The muscle cell makes less ATP c) The muscle cell continues with the Kreb's cycle but not the electron transport chain d) All of these are correct
1st attempt How do fermentation reactions in oxygen-starved muscle cells and anaerobically grown yeast cells differ?...
1st attempt How do fermentation reactions in oxygen-starved muscle cells and anaerobically grown yeast cells differ? Choose one: Fermentation in muscle cells regenerates NAD and in yeast regenerates glucose. Fermentation in muscle cells generates NAD and in yeast generates NADH. Fermentation in muscle cells produces lactate and in yeast produces ethanol plus CO2. Fermentation in muscle cells produces ethanol plus CO2 and in yeast produces lactate. Fermentation in yeast cells includes glycolysis, whereas in muscle cells it bypasses glycolysis.
10. The oxygen debt of a muscle represents excess oxygen consumed post- exercise in order to...
10. The oxygen debt of a muscle represents excess oxygen consumed post- exercise in order to do all of the following EXCEPT? a. Replace oxygen stored on myoglobin in the muscle b. Convert lactic acid to glucose c. Replace depleted Creatine Kinase enzyme levels d. Restore Muscle ATP levels e. All of the above occur
11) During intense physical exercise, human cells and tissues increjise their need for oxygen to provide...
11) During intense physical exercise, human cells and tissues increjise their need for oxygen to provide the ATP necessary for work. Why does heart rate have to increase to meet the need for oxygen? (5 points)
During exercise when the body lacks an adequate supply of oxygen
to support energy production, the pyruvate that is produced from
the breakdown of glucose is converted into lactate. High lactate
levels can lead to acidity in the muscle cells as some of the
lactate hydrolyzes to lactic acid.The dissociation of lactic acid to lactate is shown in the
reaction. Lactic acid has a pKa of 3.86
During high-intensity exercise such as sprinting or lifting a
very heavy weight, energy is provided to cells by the phosphogen
system (or ATP-PC system), which only works for a few seconds. If
the diffusion constant of ATP is 3 ×10−10 m2 s-1, how far could
this molecule diffuse in 8.3 seconds?
OH O سے OH -P-O-P-O-P-O-CH - s ATP: Ci His NsO, 2/3 NH Adenosine triphosphate (ATP) is a molecule that is often used to transfer chemical energy within cells...
97) If we cannot get enough oxygen to the muscle cells, what happens? a) The muscle cell stops contracting. b) The muscle cell makes less ATP c) The muscle cell continues with the Kreb's cycle but not the electron transport chain d) All of these are correct
1st attempt How do fermentation reactions in oxygen-starved muscle cells and anaerobically grown yeast cells differ? Choose one: Fermentation in muscle cells regenerates NAD and in yeast regenerates glucose. Fermentation in muscle cells generates NAD and in yeast generates NADH. Fermentation in muscle cells produces lactate and in yeast produces ethanol plus CO2. Fermentation in muscle cells produces ethanol plus CO2 and in yeast produces lactate. Fermentation in yeast cells includes glycolysis, whereas in muscle cells it bypasses glycolysis.
10. The oxygen debt of a muscle represents excess oxygen consumed post- exercise in order to do all of the following EXCEPT? a. Replace oxygen stored on myoglobin in the muscle b. Convert lactic acid to glucose c. Replace depleted Creatine Kinase enzyme levels d. Restore Muscle ATP levels e. All of the above occur
11) During intense physical exercise, human cells and tissues increjise their need for oxygen to provide the ATP necessary for work. Why does heart rate have to increase to meet the need for oxygen? (5 points)
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