33. The Organic Chemistry of Metabolic Pathways

What type of respiration do alcoholic and lactic acid fermentation represent?

What is the final electron acceptor during fermentation in anaerobic respiration?

Under what conditions do yeast cells switch from aerobic respiration to $\mathrm{fermentation}$?

Which molecule typically serves as the final electron acceptor during anaerobic respiration, specifically in fermentation?

Why does anaerobic respiration yield less energy than aerobic respiration?

Which of the following best explains why the first organisms on Earth were anaerobic?

Which of the following distinguishes fermentation from aerobic respiration?

Under what environmental conditions do yeast carry out fermentation?

Which of the following processes will occur if $O_2$ is not available after glycolysis?

Under what conditions is fermentation more advantageous than aerobic respiration?

What do methanogens use as their electron acceptor for anaerobic respiration?

What is anaerobic fermentation in the context of anaerobic respiration?

Circle the correct type of respiration under which:

a) Pyruvate converted to lactate (aerobic or anaerobic)

b) Glucose converted to pyruvate (aerobic or anaerobic)

c) Pyruvate converted to Acetyl CoA (aerobic or anaerobic)

d) Pyruvate converted to ethanol (aerobic or anaerobic)

Select the best statement about fate of pyruvate.

What is the primary difference between fermentation and anaerobic respiration?