AP BIOLOGY

CELL RESPIRATION

THE KREBS CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
T/F-Almost all molecules that are catabolized for energy are converted into coenzyme Q, including proteins, lipids, and carbohydrates.
A
True
B
False
Explanation: 

Detailed explanation-1: -In general, the main energy source for cellular metabolism is glucose, which is catabolized in the three subsequent processes-glycolysis, tricarboxylic acid cycle (TCA or Krebs cycle), and finally oxidative phosphorylation-to produce ATP.

Detailed explanation-2: -Answer and Explanation: The types of molecules broken down through cellular respiration are organic molecules from three macronutrient classes, carbohydrates, lipids, and proteins.

Detailed explanation-3: -Is glucose the only molecule that can be catabolized during cellular respiration? Glucose is the main molecule to undergo cellular respiration (by glycolysis and then kreb’s cycle) to give ATP. Other molecules include the products of the glycolysis and kreb’s cycle especially acetyl-coenzyme A (acetyl CoA).

Detailed explanation-4: -Cellular respiration is the process of extracting energy in the form of ATP from the glucose in the food you eat. Oxygen and glucose are both reactants of cellular respiration. When one molecule of glucose is broken down, it can be converted to a net total of 36 or 38 molecules of ATP.

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