What mnemonic is used to remember the phases of cellular respiration?

• A. KET
• B. Krebs Cycle, Electron Transport Chain, Glycolysis
• C. Glycolysis, KET, Krebs Cycle
• D. Glycolysis, Krebs Cycle, Electron Transportation

Answer: (A)

The phases of cellular respiration can be remembered by using the mnemonic "Glycolysis, Krebs Cycle, Electron Transport." This phrase captures the three major stages of cellular respiration in sequential order:

1. Glycolysis: This initial stage occurs in the cytoplasm and involves the breakdown of glucose into pyruvate, producing a small amount of ATP and NADH in the process.

2. Krebs Cycle (also known as the Citric Acid Cycle): Taking place in the mitochondrial matrix, this phase involves the further oxidation of the pyruvate produced during glycolysis, generating additional NADH and FADH2, as well as ATP.

3. Electron Transport Chain: This final phase occurs in the inner mitochondrial membrane, where the electrons from NADH and FADH2 are transferred through protein complexes, ultimately producing a large amount of ATP through oxidative phosphorylation.

By recalling the order of these phases, students can better understand how energy is harvested from glucose and the importance of each stage in the overall process of cellular respiration. The mnemonic is effective because it succinctly encapsulates the key elements of the pathway that are critical for energy production in cells.