Question

Which of the following are essential to ensure an anaerobic condition for the respiration of the yeast?
(1) stopper the flask
(2) vaseline the joints
(3) add paraffin oil
(4) boil the glucose solution
Why (1)&(2) are incorrect??
(p.s. The answer is (3)& (4) only)
Thanks a lot!!!!

Answer 1

Explanation:

When anaerobic respiration occurs, there is

no oxygen to act as the final hydrogen acceptor and so the hydrogen cannot pass through the cytochrome system. As a result, both the Krebs cycle and the cytochrome system stages cannot take place. The only ATP produced is formed during glycolysis, that is, 2 ATP. Anaerobic respiration produces only 2 ATP compared to the 38 molecules of ATP produced during aerobic respiration. In both yeast and muscles, anaerobic respiration yields 2 ATP.

Therefore, the correct answer is option B

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Answer 2

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Answer:

4 ) boil the glucose solution

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