EVERYDAY SCIENCE

Detailed explanation-1: -While most aerobic respiration (with oxygen) takes place in the cell’s mitochondria, and anaerobic respiration (without oxygen) takes place within the cell’s cytoplasm.

Detailed explanation-2: -Complete answer: Mitochondria is present in the aerobic organisms only as the aerobic part of the cellular respiration takes place in the mitochondria. ATP is formed by the reactions of the Krebs cycle in the mitochondrial matrix and Electron Transport System (ETS) in the inner membrane of the mitochondria.

Detailed explanation-3: -Mitochondria play a critical role in the generation of metabolic energy in eukaryotic cells. As reviewed in Chapter 2, they are responsible for most of the useful energy derived from the breakdown of carbohydrates and fatty acids, which is converted to ATP by the process of oxidative phosphorylation.