The type of respiration that involves the step-by-step breakdown of carbon chain molecules in the cell is called
Correct answer: C. Cellular respiration
- A. External respiration
- B. Pulmonary respiration
- C. Cellular respiration
- D. Cutaneous respiration
Explanation
The correct answer is cellular respiration. This process involves the breakdown of carbon chain molecules, such as glucose, within cells to produce ATP, the energy currency of the cell. The breakdown occurs in several stages, including glycolysis, the citric acid cycle, and oxidative phosphorylation. External respiration and pulmonary respiration refer to the exchange of gases at the respiratory system level, not at the cellular level. Cutaneous respiration involves gas exchange through the skin and is unrelated to the cellular metabolic processes of energy conversion.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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