Cellular Respiration: NADH Formation and ATP Production

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Questions and Answers

How many ATP molecules are gained during aerobic respiration of one molecule of glucose?

  • 38
  • 40
  • 2
  • 36 (correct)

In fermentation, how many molecules of ATP are gained for each molecule of glucose degraded to pyruvic acid?

  • 15
  • 2 (correct)
  • 36
  • 40

What is the fate of glucose in the respiratory pathway?

  • It is directly respired without any conversion.
  • It does not enter the respiratory pathway at all.
  • It enters the respiratory pathway after being broken down into glycerol and fatty acids.
  • It is usually first converted into glucose before being used for respiration. (correct)

Which pathway involves the complete degradation of glucose to CO2 and H2O?

<p>Aerobic respiration (B)</p>
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During which process is NADH oxidised to NAD+ rather slowly?

<p>Fermentation (A)</p>
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What is the main difference in ATP generation between fermentation and aerobic respiration?

<p>More ATP molecules are generated in aerobic respiration. (C)</p>
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Which substrate needs to be broken down into glycerol and fatty acids before entering the respiratory pathway?

<p><strong>Fats</strong> (A)</p>
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Glucose is the favoured substrate for which process?

<p><strong>Respiration</strong> (B)</p>
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Glycerol would enter the respiratory pathway after being converted to what compound?

<p><strong>Acetyl CoA</strong> (D)</p>
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NADH oxidation is more vigorous in which process compared to fermentation?

<p>Aerobic respiration (D)</p>
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Flashcards

ATP gain in Aerobic Respiration?

36 ATP molecules are gained during aerobic respiration of one molecule of glucose.

ATP gain in Fermentation?

2 ATP molecules are gained for each molecule of glucose degraded to pyruvic acid during fermentation.

Fate of Glucose

Glucose is usually first converted into glucose before being used for respiration.

Complete Glucose Degradation?

Aerobic respiration involves the complete degradation of glucose to CO2 and H2O

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NADH oxidation speed - fermentation

NADH is oxidised to NAD+ rather slowly during fermentation.

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ATP Generation Difference?

More ATP molecules are generated in aerobic respiration compared to fermentation.

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Fats Breakdown

Fats need to be broken down into glycerol and fatty acids before entering the respiratory pathway.

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Favoured Substrate for Respiration?

Glucose is the favoured substrate for respiration.

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Glycerol Entry Point

Glycerol would enter the respiratory pathway after being converted to Acetyl CoA.

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NADH Oxidation Speed - Aerobic

NADH oxidation is more vigorous in aerobic respiration compared to fermentation.

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