Metabolites of the Kreb's cycle are:

Metabolites of the Kreb's cycle are:

• A. water, energy, carbon dioxide
• B. energy and pyruvic acid
• C. electrolytes and water
• D. lactic acid and glycogen

Answer: (A)

The metabolites of the Kreb's cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, are primarily involved in the production of energy, carbon dioxide, and water. In the cycle, acetyl-CoA enters and undergoes a series of enzymatic reactions that ultimately generate high-energy molecules such as ATP (adenosine triphosphate), NADH, and FADH2. These high-energy molecules carry electrons to the electron transport chain, contributing to additional ATP production. As a byproduct of these reactions, carbon dioxide is released, which is then expelled from the body through respiration. Water is formed as a final product as well, particularly during the electron transport chain, where oxygen acts as the terminal electron acceptor. Thus, the correct choice reflects the primary outputs of the Kreb's cycle in terms of metabolism. In contrast, the other options do not accurately represent the specific products of the Kreb's cycle. Pyruvic acid, for instance, is a product of glycolysis, not directly related to the Kreb's cycle itself. Similarly, lactic acid and glycogen pertain to anaerobic metabolism and glucose storage, respectively, rather than the aerobic processes that

The metabolites of the Kreb's cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, are primarily involved in the production of energy, carbon dioxide, and water. In the cycle, acetyl-CoA enters and undergoes a series of enzymatic reactions that ultimately generate high-energy molecules such as ATP (adenosine triphosphate), NADH, and FADH2. These high-energy molecules carry electrons to the electron transport chain, contributing to additional ATP production.

As a byproduct of these reactions, carbon dioxide is released, which is then expelled from the body through respiration. Water is formed as a final product as well, particularly during the electron transport chain, where oxygen acts as the terminal electron acceptor. Thus, the correct choice reflects the primary outputs of the Kreb's cycle in terms of metabolism.

In contrast, the other options do not accurately represent the specific products of the Kreb's cycle. Pyruvic acid, for instance, is a product of glycolysis, not directly related to the Kreb's cycle itself. Similarly, lactic acid and glycogen pertain to anaerobic metabolism and glucose storage, respectively, rather than the aerobic processes that