Where does cellular respiration occur within cells? a. the entire process takes place inside the inner membrane of the nucleus. b. the entire process will take place within the cell, both in the cytoplasm and the mitochondria. c. cellular respiration takes place in the nucleus of the cell. d. cellular respiration takes place along the cell membrane as molecules enter and exit the cell.

Option B

The entire process will take place within the cell, both in the cytoplasm AND the mitochondria.

There are four major parts of cellular aerobic respiration:

1.Glycolysis

2.Link reaction

3.Krebs cycle

4.Electron transport chain, or ETC

In glycolysis, glucose is broken down in the cytoplasm into two molecule of pyruvate. Ten chemical reactions takes place in glycolysis which uses two ATP molecules. After this each pyruvate molecule in the cytoplasm enters the mitochondrion, where it is converted into acetyl CoA, a two-carbon energy carrier, and its third carbon combines with oxygen and is released as carbon dioxide. Along with this a NADH molecule is produced. Acetyl CoA enters citric acid cycle and it is the second major source of energy in cells. It is a eight-step cycle which generates three NADH molecules and two carrier molecules: FADH2 and GTP

Thus it is clear from the above description that the cellular respiration takes place in the cytoplasm and mitochondria majorly.

The answer is; B

Anaerobic respiration such as glycolysis occurs in the cytoplasm of the cell. IN the presence of oxygen, the end product of glycolysis (that it pyruvate) is channeled to mitochondria (as acetyl-CoA) and aerobic respiration proceeds to produce more ATPs. The end product of bi respiration is carbon IV oxude and water.

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