Question

In the table below, complete the following

i.   List the 3 processes occurring in energy metabolism (cellular respiration),
ii. the specific location they occur in the cell and
iii. whether the process is aerobic or anaerobic.

Metabolic process	Cell location	Aerobic or Anaerobic

Answer 1

Answer is as follows:-

Explanation-

Glycolysis occurs in the ctyoplasm of the cell.
In glycolysis, none of its nine steps involve the use of oxygen and so its anaerobic process.

Krebs cycle occurs in the mitochondrial matrix and generates a pool of chemical energy which are ATP, NADH, and FADH2, from the oxidation of pyruvate which is the end product of glycolysis.It is an aerobic pathway because the NADH and FADH2 produced must transfer their electrons to the next pathway in the system which will use oxygen and if this transfer does not occur, the oxidation steps of the citric acid cycle also do not occur.

Electron transport chain occurs in the inner membrane of mitochondria and they uses free oxygen as the final electron acceptor of the electrons removed from the intermediate compounds in glucose catabolism and so it is an aerobic process.

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