QUESTION 16 What happens in glycolysis? Glucose is broken down into CO2 Glucose is reduced and split into two pyruvate molecules Glucose is oxidized and split into two pyruvate molecules Glucose gains electrons and is fed into the mitochondria QUESTION 17 What happens to pyruvate when oxygen is present in the cell? It is excreted by the cell as pyruvic acid It becomes fermented into lactic acid It enters the citric acid cycle to complete oxidation It becomes fermented into ethanol
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Step 1: In glycolysis, glucose is reduced and split into two pyruvate molecules. Show more…
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Glycolysis results in the partial oxidation of glucose to pyruvate. This means that: glucose donates electrons directly to NAD+ glucose combines with oxygen in the cytoplasm to get partially oxidized. glucose is broken down partially to ATP in the cytoplasm. glycolysis results in acetylCoA, not pyruvate the electron carriers donate electrons to proteins in the mitochondria that in turn produce ATP. in the process of the conversion of glucose to pyruvate, some potential energy is transferred to NADH and ATP.
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Question 5 What happens to pyruvate in the absence of oxygen in muscle cells? It enters the mitochondrial matrix and combines with oxaloacetate to form citrate It remains in the cytosol and is converted to ethanol It enters the mitochondrial matrix and is converted to acetyl CoA It remains in the cytosol and is converted to lactate Question 6 In cells, how are energy-requiring reactions are made possible? They are coupled to reactions that release energy. Energy-rich compounds like glucose-6-phosphate are included in the reaction. They are coupled to other energy-requiring reactions. They occur inside of mitochondria.
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Describe the conversion of glucose to pyruvate in glycolysis and the subsequent conversion of pyruvate to acetyl-CoA or lactate. How does phosphorylation account for the production of ATP in glycolysis?
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