Which of the following cellular processes includes all of the others in cellular respiration?

• A. Electron Transport Chain
• B. Cellular Respiration
• C. Krebs Cycle
• D. Glycolysis

Answer: (B)

Verified step by step guidance

1. Understand that cellular respiration is a metabolic pathway that converts glucose into ATP, the energy currency of the cell, through a series of processes.
2. Recognize that cellular respiration consists of three main stages: Glycolysis, the Krebs Cycle (also known as the Citric Acid Cycle), and the Electron Transport Chain.
3. Identify that Glycolysis is the first stage, occurring in the cytoplasm, where glucose is broken down into pyruvate, producing a small amount of ATP and NADH.
4. Acknowledge that the Krebs Cycle takes place in the mitochondria, where pyruvate is further broken down, releasing carbon dioxide and generating more NADH and FADH2, along with a small amount of ATP.
5. Realize that the Electron Transport Chain is the final stage, located in the inner mitochondrial membrane, where NADH and FADH2 are used to produce a large amount of ATP through oxidative phosphorylation. Therefore, cellular respiration encompasses all these processes, including Glycolysis, the Krebs Cycle, and the Electron Transport Chain.