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Glyceraldehyde-3-phosphate Dehydrogenation Pathway Quiz

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Glyceraldehyde-3-phosphate Dehydrogenation Pathway Quiz

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Questions and Answers

What is the main purpose of dehydrogenation in the glycolysis pathway?

Regenerate NAD (correct)

Decarboxylate pyruvate

Form FAD

Produce ATP molecules

In anaerobic respiration, what role does pyruvate play in relation to NAD regeneration?

Pyruvate is converted to ethanol without involving NAD

Pyruvate accepts H atoms from NAD to regenerate it (correct)

Pyruvate forms CO2 without affecting NAD levels

Pyruvate generates ATP directly from NAD

What happens to ethanol formed in alcoholic fermentation when oxygen is available again?

Ethanol is converted back to pyruvate for energy production

Ethanol directly enters the Krebs cycle for ATP synthesis

Ethanol accumulates in the cell and can reach toxic levels (correct)

Ethanol is oxidized to produce NADH

During substrate-level phosphorylation in glycolysis, which process results in the conversion of ADP to ATP?

Dehydrogenation Signup and view all the answers

Why is the Krebs cycle essential for aerobic respiration?

To produce NADH and FADH2 for ATP synthesis Signup and view all the answers

What is the main purpose of glycolysis?

To provide energy in the form of ATP Signup and view all the answers

In anaerobic respiration, what serves as the terminal electron acceptor?

Pyruvate Signup and view all the answers

What is the process that directly produces ATP without the involvement of the electron transport chain?

Alcoholic fermentation Signup and view all the answers

Which of the following is NOT a product of glycolysis?

Acetyl Coenzyme A Signup and view all the answers

What is a characteristic of alcoholic fermentation?

It involves the conversion of pyruvate to ethanol Signup and view all the answers