Question

question 10
atching consider the purpose and different types of fermentation.

mpts
answers
① if there is not enough oxygen for a bacterial cell, it may carry out ____ fermentation.
regenerate atp
② the purpose of fermentation is to?
regenerate nadh
③ the net production of atp per glucose in glycolysis coupled with fermentation?
regenerate nad+

Explanation:

1. Bacterial cells can carry out lactic - acid fermentation or alcohol fermentation under anaerobic conditions. But lactic - acid fermentation is common in bacteria when oxygen is scarce.
2. Fermentation aims to regenerate NAD+ so that glycolysis can continue. During glycolysis, NAD+ is converted to NADH, and fermentation reconverts NADH back to NAD+.
3. In glycolysis coupled with fermentation, the net production of ATP per glucose is 2. Glycolysis itself produces 4 ATPs but uses 2 ATPs in the initial steps, resulting in a net of 2 ATPs.

Answer:

1. lactic - acid
2. regenerate NAD+
3. 2