AP BIOLOGY

Detailed explanation-1: -The second step in aerobic respiration is the formation of acetyl coenzyme A. In this process, pyruvate is oxidized in the mitochondria and 2-carbon acetyl group is produced.

Detailed explanation-2: -The Krebs cycle is the second stage of cellular respiration, and cellular respiration is a series of stages or biochemical pathways that produces energy for the cell. Cellular respiration begins with a pathway called glycolysis where glucose is converted into a molecule called pyruvate.

Detailed explanation-3: -In the presence of oxygen, the next stage after glycolysis is oxidative phosphorylation, which feeds pyruvate to the Krebs Cycle and feeds the hydrogen released from glycolysis to the electron transport chain to produce more ATP (up to 38 molecules of ATP are produced in this process).

Detailed explanation-4: -Aerobic respiration is a series of enzyme-controlled reactions that release the energy stored up in carbohydrates and lipids during photosynthesis and make it available to living organisms. There are four stages: glycolysis, the link reaction, the Krebs cycle and oxidative phosphorylation.