Erythrocytes red blood cells have no mitochondria, and thus cannot use oxidative phosphorylation to produce additional ATP from pyruvate derived from glycolysis. Liver cells hepatocytes , neurons, and muscle cells myocytes can derive some ATP from glycolysis, but then feed the resulting pyruvate into the Krebs cycle in the mitochondria for additional energy production. Which of the following biological processes will occur under both aerobic and anaerobic conditions in humans? The correct answer is glycolysis.
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Erythrocytes red blood cells have no mitochondria, and thus cannot use oxidative phosphorylation to produce additional ATP from pyruvate derived from glycolysis. Liver cells hepatocytes , neurons, and muscle cells myocytes can derive some ATP from glycolysis, but then feed the resulting pyruvate into the Krebs cycle in the mitochondria for additional energy production. Which of the following biological processes will occur under both aerobic and anaerobic conditions in humans?
The correct answer is glycolysis. Fermentation is a pathway that requires anaerobic conditions to activate. The citric acid cycle and Krebs cycle are two terms for the same process, and require aerobic conditions to proceed. Glycolysis has pathways that account for situations both in the presence and absence of oxygen. The other choices are incorrect.
Glycolysis is an anaerobic process and takes place in the cytoplasm, not the mitochondria. Finally, pyruvate products do not necessarily have to enter the Krebs cycle—they can be metabolized anaerobically if insufficient oxygen is present.
Acetyl CoA is formed from pyruvate at the beginning fo the Krebs cycle. GTP is a product of the Krebs cycle. Oxygen and glucose are both reactants in metabolic processes that are derived from external intake respiration and digestion. Given the process of glycolysis, which of the following would serve to allosterically inhibit the rate of glycolysis? The product of glycolysis is ATP, and each cycle gives a net of two ATP, thus if there were already high levels of ATP in the body, glycolysis would not have to occur as frequently since the body's energy demands are already being met.
High levels of ATP would serve as an allosteric inhibitor. Decreased ATP and increased glucose would increase the rate of glycolysis. Increased oxygen or fructose may indirectly increase the rate of glycolysis, depending on other cellular factors. Glycolysis is the first step of cellular respiration.
Lactic acid is a byproduct of anaerobic respiration in skeletal muscle. The first step of respiration is glycolysis. All of the steps of glycolysis take place in the cytosol of the cell; this allows prykarotes to perform glycolysis, as well as eukaryotes.
Once pyruvate is generated from glycolysis, it is transported to the mitochondria to complete the citric acid cycle. The electron transport chain, the final step of cellular respiration, is located on the inner mitochondrial membrane, and utilizes the proton gradient in the intermembrane space. The process requires an initial investment of two ATP to initiate the glycolysis pathway. Glycolysis is an anaerobic process that occurs in the cytoplasm.
The glycolysis reaction follows two step. ADP is consumed in a greater quantity than it is produced, eliminating it from the net products. To get from glucose to pyruvate, a number of enzymes are needed. While knowing the names of each enzyme is not usually necessary, it is important to have a general understanding of the glycolytic process.
The first step is phosphorylation of the reactant glucose, which is accomplished by hexokinase in most cells, and by glucokinase in the liver and pancreas specifically. The resultant glucosephosphate then continues through the remaining steps in glycolysis to produce pyruvate.
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Email address: Your name:. Which cell in the human body only uses glycolysis for ATP production? Possible Answers: Hepatocyte. Correct answer: Erythrocyte. Explanation : Erythrocytes red blood cells have no mitochondria, and thus cannot use oxidative phosphorylation to produce additional ATP from pyruvate derived from glycolysis.
Report an Error. Example Question 1 : Biochemistry And Metabolism. Possible Answers: Citric acid cycle. All of the these processes occur in both environments.
Correct answer: Glycolysis. Explanation : The correct answer is glycolysis. Example Question 1 : Glycolysis. Possible Answers: A proton gradient is established across the mitochondrial membrane. Two net molecules of ATP are produced through substrate-level phosphorylation. Resulting pyruvate molecules are always directly incorporated into the Krebs cycle. Glycolysis cannot proceed under anaerobic conditions.
Correct answer: Two net molecules of ATP are produced through substrate-level phosphorylation. Correct answer: NADH. Example Question : Mcat Biological Sciences. Possible Answers: Increased oxygen. Correct answer: Increased ATP. Explanation : The product of glycolysis is ATP, and each cycle gives a net of two ATP, thus if there were already high levels of ATP in the body, glycolysis would not have to occur as frequently since the body's energy demands are already being met.
Which of the following products is not created by glycolysis? Possible Answers: Lactic acid. Correct answer: Lactic acid. Explanation : Glycolysis is the first step of cellular respiration. Possible Answers: The mitochondrial matrix. Correct answer: The cytosol. Explanation : The first step of respiration is glycolysis.
Correct answer: It produces four net ATP. Example Question 2 : Biochemistry And Metabolism. Which of the following is not a product in the net reaction for glycolysis? Correct answer: ADP. Explanation : The glycolysis reaction follows two step. What type of enzyme is responsible for initiating the process of glycolysis? Possible Answers: Hydrolase.
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MCAT Biology : Glycolysis
Following the depletion of muscle phosphocreatine stores through intense sprint exercise, which is true of the time course for complete re-synthesis of these stores? Muscle cannot release its stored glycogen into the circulation to maintain blood glucose levels because it lacks the enzyme:. Before the pyruvate that has been generated by glycolysis can be oxidized, it must be transported into a mitochondrion. This is accomplished by:. Which is true regarding the efficiency of the oxidation of fat vs.
Chapter 2: Multiple choice questions
Solved examples with detailed answer description, explanation are given and it would be easy to understand. Here you can find objective type Biochemistry Glycolysis questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided. You can easily solve all kind of Biochemistry questions based on Glycolysis by practicing the objective type exercises given below, also get shortcut methods to solve Biochemistry Glycolysis problems.
MCQ: Glycolysis, Gluconeogenesis, Pentose Phosphate Pathways Flashcards Preview