How Does the Reductive (Reverse) TCA Cycle Participate in Carbon

question 56

Multiple Choice

How does the reductive (reverse) TCA cycle participate in carbon fixation?

• A) Some of the TCA reactions occur in reverse, assimilating small amounts of CO₂.
• B) CO₂ assimilation replenishes TCA intermediates for anabolic pathways.
• C) Reverse TCA regenerates acetyl-CoA, which may enter gluconeogenesis via pyruvate.
• D) All of the above.
• E) None of the above.

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Definitions:

Sexual Maturation

The process by which individuals reach a state of full reproductive ability.

Physical Growth

The process of bodily changes and increase in size, strength, and functionality that occur over time, especially significant during childhood and adolescence.

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The parts of the brain that interact to produce emotions, including the amygdala, the hypothalamus, and the hippocampus. Many other parts of the brain are also involved with emotions.

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The prefrontal cortex is a region in the front part of the frontal lobes of the brain, important for decision making, complex cognitive behavior, personality expression, and moderating social behavior.