Cellular Respiration - AP Biology
Card 0 of 1862
In glycolysis, what is the net gain of ATP molecules per glucose?
In glycolysis, what is the net gain of ATP molecules per glucose?
In glycolysis, the net gain of ATP molecules is 2. Two ATP per glucose molecule are required to initiate the process, then a total of four ATP are produced per molecule of glucose.
In glycolysis, the net gain of ATP molecules is 2. Two ATP per glucose molecule are required to initiate the process, then a total of four ATP are produced per molecule of glucose.
Compare your answer with the correct one above
Which of the following is a compound stored in liver and muscle cells that can be broken down into glucose?
Which of the following is a compound stored in liver and muscle cells that can be broken down into glucose?
Glycogen is the polysaccharide stored in the liver and muscle cells of animals that can be broken down into glucose. Sucrose and fructose are sugars. Starch is a polysaccharide found in plants.
Glycogen is the polysaccharide stored in the liver and muscle cells of animals that can be broken down into glucose. Sucrose and fructose are sugars. Starch is a polysaccharide found in plants.
Compare your answer with the correct one above
What is the end product of fermentation after glycolysis in animal cells when no oxygen is present?
What is the end product of fermentation after glycolysis in animal cells when no oxygen is present?
Lactic acid is produced in animal cells when no oxygen is present in order to keep making ATP. Alcohol is produced in yeast cells in fermentation. Glucose is broken down in the entire cycle of respiration, and sucrose is a disaccharide.
Lactic acid is produced in animal cells when no oxygen is present in order to keep making ATP. Alcohol is produced in yeast cells in fermentation. Glucose is broken down in the entire cycle of respiration, and sucrose is a disaccharide.
Compare your answer with the correct one above
Where does the Krebs cycle takes place?
Where does the Krebs cycle takes place?
The Krebs cycle takes place within the mitochondrial matrix of mitochondria. Glycolysis occurs in the cell's cytosol. The stroma is part of plant chloroplasts, thus it is not the site of the Krebs cycle.
The Krebs cycle takes place within the mitochondrial matrix of mitochondria. Glycolysis occurs in the cell's cytosol. The stroma is part of plant chloroplasts, thus it is not the site of the Krebs cycle.
Compare your answer with the correct one above
Which of the following processes occurs without oxygen?
Which of the following processes occurs without oxygen?
Fermentation is a catabolic process which does not require oxygen. In contrast, Krebs cycle (citric acid cycle) and oxidative phosphorylation (chemiosmosis and electron transport) do use oxygen. Aerobic respiration is much more efficient than anaerobic respiration in producing ATP.
Fermentation is a catabolic process which does not require oxygen. In contrast, Krebs cycle (citric acid cycle) and oxidative phosphorylation (chemiosmosis and electron transport) do use oxygen. Aerobic respiration is much more efficient than anaerobic respiration in producing ATP.
Compare your answer with the correct one above
Oxygen is necessary for aerobic respiration, because __________.
Oxygen is necessary for aerobic respiration, because __________.
Oxygen is the final electron acceptor in aerobic respiration. It becomes water upon being reduced by the accepted electrons, which explains why water is one of the products of respiration. Without the presence of oxygen, electrons would remain trapped and bound in the final step of the electron transport chain, preventing further reaction.
NADH and FADH2 are necessary to donate electrons to the electron transport chain.
Oxygen is the final electron acceptor in aerobic respiration. It becomes water upon being reduced by the accepted electrons, which explains why water is one of the products of respiration. Without the presence of oxygen, electrons would remain trapped and bound in the final step of the electron transport chain, preventing further reaction.
NADH and FADH2 are necessary to donate electrons to the electron transport chain.
Compare your answer with the correct one above
Which of the following chemical equations represents the net chemical reaction of aerobic cellular respiration?
Which of the following chemical equations represents the net chemical reaction of aerobic cellular respiration?
Aerobic cellular respiration is the process of breaking down glucose 
to form intermittent electron electron carriers, which eventually donate their electrons to the final electron acceptor, oxygen, at the end of the electron transport chain. This process produces usable energy in the form of ATP, as well as waste produced of carbon dioxide and water.
Aerobic cellular respiration is the process of breaking down glucose
Compare your answer with the correct one above
Eukaryotes are capable of producing ATP with or without oxygen. In comparison, prokaryotes __________.
Eukaryotes are capable of producing ATP with or without oxygen. In comparison, prokaryotes __________.
One way to divide prokaryotes is into aerobes and anaerobes. Aerobes are organisms that can survive and grow in the presence of oxygen while anaerobes did not require oxygen for survival and growth. All aerobes can produce ATP with or without oxygen (though they may need oxygen for survival. However some anaerobes are harmed by the presence of oxygen (obligate anaerobes). These anaerobes can produce ATP through glycolysis or anaerobic respiration, where another molecule besides oxygen is used as the final electron acceptor for the electron transport chain.
One way to divide prokaryotes is into aerobes and anaerobes. Aerobes are organisms that can survive and grow in the presence of oxygen while anaerobes did not require oxygen for survival and growth. All aerobes can produce ATP with or without oxygen (though they may need oxygen for survival. However some anaerobes are harmed by the presence of oxygen (obligate anaerobes). These anaerobes can produce ATP through glycolysis or anaerobic respiration, where another molecule besides oxygen is used as the final electron acceptor for the electron transport chain.
Compare your answer with the correct one above
In the process of cellular respiration, if no oxygen is available, what is the fate of the pyruvate molecules produced during glycolysis?
In the process of cellular respiration, if no oxygen is available, what is the fate of the pyruvate molecules produced during glycolysis?
If no oxygen is available, anaerobic respiration will occur. This can either be lactic acid fermentation, or alcoholic fermentation. In alcoholic or lactic acid fermentation, the pyruvate are decarboxylated and ultimately used to produce either ethanol or lactic acid, and regenerate NAD+ which will be reused for another cycle of glycolysis (2 ATP are produced for each round of glycolysis).
If no oxygen is available, anaerobic respiration will occur. This can either be lactic acid fermentation, or alcoholic fermentation. In alcoholic or lactic acid fermentation, the pyruvate are decarboxylated and ultimately used to produce either ethanol or lactic acid, and regenerate NAD+ which will be reused for another cycle of glycolysis (2 ATP are produced for each round of glycolysis).
Compare your answer with the correct one above
Anaerobic respiration occurs when?
Anaerobic respiration occurs when?
If no oxygen is available, anaerobic respiration will occur. This can either be lactic acid fermentation, or alcoholic fermentation. In alcoholic or lactic acid fermentation, the pyruvate are decarboxylated and ultimately used to produce either ethanol or lactic acid, and regenerate NAD+ which will be reused for another cycle of glycolysis (2 ATP are produced for each round of glycolysis).
If no oxygen is available, anaerobic respiration will occur. This can either be lactic acid fermentation, or alcoholic fermentation. In alcoholic or lactic acid fermentation, the pyruvate are decarboxylated and ultimately used to produce either ethanol or lactic acid, and regenerate NAD+ which will be reused for another cycle of glycolysis (2 ATP are produced for each round of glycolysis).
Compare your answer with the correct one above
Where does anaerobic respiration occur in a cell?
Where does anaerobic respiration occur in a cell?
In the absence of oxygen, pyruvate produced during glycolysis will be used for either lactic acid or alcoholic fermentation, producing lactic acid or ethanol (as waste products) and regenerating NAD+ to be used for another cycle of glycolysis. This fermentation occurs in the cytosol of the cell.
In the absence of oxygen, pyruvate produced during glycolysis will be used for either lactic acid or alcoholic fermentation, producing lactic acid or ethanol (as waste products) and regenerating NAD+ to be used for another cycle of glycolysis. This fermentation occurs in the cytosol of the cell.
Compare your answer with the correct one above
During pyruvate decarboxylation reaction, pyruvate is converted to _______________ compound, through a reaction called ______________ .
During pyruvate decarboxylation reaction, pyruvate is converted to _______________ compound, through a reaction called ______________ .
Pyruvate decarboxylation is an oxidative decarboxylation reaction, or an oxidation reaction where a carboxylate group is removed. This reaction converts pyruvate which was produced through glycolysis to acetyl CoA to be used in the Citric Acid Cycle.
Pyruvate decarboxylation is an oxidative decarboxylation reaction, or an oxidation reaction where a carboxylate group is removed. This reaction converts pyruvate which was produced through glycolysis to acetyl CoA to be used in the Citric Acid Cycle.
Compare your answer with the correct one above
Which enzyme complex catalyzes the pyruvate decarboxylation reaction?
Which enzyme complex catalyzes the pyruvate decarboxylation reaction?
The pyruvate dehydrogenase complex is an enzyme complex that consists of 3 enzymes, which work together to catalyze the pyruvate decarboxylation reaction, where pyruvate is converted to acetyl CoA.
The pyruvate dehydrogenase complex is an enzyme complex that consists of 3 enzymes, which work together to catalyze the pyruvate decarboxylation reaction, where pyruvate is converted to acetyl CoA.
Compare your answer with the correct one above
Where does the pyruvate decarboxylation reaction occur?
Where does the pyruvate decarboxylation reaction occur?
Pyruvate decarboxylation occurs in the mitochondrial matrix. The acetyl CoA produced from the pyruvate decarboxylation reaction will undergo the Citric Acid cycle also in the mitochondrial matrix.
Pyruvate decarboxylation occurs in the mitochondrial matrix. The acetyl CoA produced from the pyruvate decarboxylation reaction will undergo the Citric Acid cycle also in the mitochondrial matrix.
Compare your answer with the correct one above
For each glucose molecule that undergoes glycolysis, how many acetyl CoA molecules are produced at the end of pyruvate decarboxylation?
For each glucose molecule that undergoes glycolysis, how many acetyl CoA molecules are produced at the end of pyruvate decarboxylation?
During glycolysis, for each molecule of glucose, two molecules of pyruvate are produced ( glucose+ NAD+ + 2 ADP + 2Pi-> 2 pyruvate+ 2 ATP + 2NADH+. These 2 molecules of pyruvate then undergo the pyruvate decarboxylation reaction: 2(pyruvate+ CoA-SH+ NAD+ -> NADH+ CO2+ acetyl CoA).
During glycolysis, for each molecule of glucose, two molecules of pyruvate are produced ( glucose+ NAD+ + 2 ADP + 2Pi-> 2 pyruvate+ 2 ATP + 2NADH+. These 2 molecules of pyruvate then undergo the pyruvate decarboxylation reaction: 2(pyruvate+ CoA-SH+ NAD+ -> NADH+ CO2+ acetyl CoA).
Compare your answer with the correct one above
Which is not a product of pyruvate decarboxylation reaction?
Which is not a product of pyruvate decarboxylation reaction?
The pyruvate decarboxylation reaction is pyruvate+ CoA-SH+ NAD+ -> NADH+ CO2+ acetyl CoA.
The pyruvate decarboxylation reaction is pyruvate+ CoA-SH+ NAD+ -> NADH+ CO2+ acetyl CoA.
Compare your answer with the correct one above
During the pyruvate decarboxylation reaction, acetyl CoA is produced through which type of bond linking an acetyl group to coenzyme A?
During the pyruvate decarboxylation reaction, acetyl CoA is produced through which type of bond linking an acetyl group to coenzyme A?
During the pyruvate decarboxylation reaction 
, a thioester bond links the acetyl group of pyruvate with coenzyme A to produce acetyl CoA.
During the pyruvate decarboxylation reaction 
Compare your answer with the correct one above
Where does glycolysis take place in the cell?
Where does glycolysis take place in the cell?
Glycolysis happens in the cytosol (the fluid containing the organelles) of the cell. The next step in cellular respiration, the citric acid cycle, occurs in the mitochondria.
Glycolysis happens in the cytosol (the fluid containing the organelles) of the cell. The next step in cellular respiration, the citric acid cycle, occurs in the mitochondria.
Compare your answer with the correct one above
Which of the following is not a product of glycolysis?
Which of the following is not a product of glycolysis?
NAD+ is required as an oxidizing agent (accepting electrons from other molecules) during glycolysis. As it accepts electrons, it becomes NADH, a byproduct of glycolysis. NADH can be reverted back to NAD+ to continue glycolysis through the process of fermentation, but is usually used to donate the added electron to the electron transport chain later in the cell metabolism process. The electron is used to power the protein pumps that create the proton gradient that powers ATP synthase.
NAD+ is required as an oxidizing agent (accepting electrons from other molecules) during glycolysis. As it accepts electrons, it becomes NADH, a byproduct of glycolysis. NADH can be reverted back to NAD+ to continue glycolysis through the process of fermentation, but is usually used to donate the added electron to the electron transport chain later in the cell metabolism process. The electron is used to power the protein pumps that create the proton gradient that powers ATP synthase.
Compare your answer with the correct one above
Which of the following processes in eukaryotic cellular respiration can occur in an anaerobic environment?
Which of the following processes in eukaryotic cellular respiration can occur in an anaerobic environment?
Glycolysis is the first step of cellular respiration and, in the process of splitting glucose into two pyruvate molecules, does not require oxygen.
Pyruvate decarboxylation, the citric acid cycle, and oxidative phosphorylation are all steps in aerobic respiration, and thus require the presence of oxygen.
Glycolysis is the first step of cellular respiration and, in the process of splitting glucose into two pyruvate molecules, does not require oxygen.
Pyruvate decarboxylation, the citric acid cycle, and oxidative phosphorylation are all steps in aerobic respiration, and thus require the presence of oxygen.
Compare your answer with the correct one above