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

question 32

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 uses up TCA intermediates for anabolic pathways.
• C) Reverse TCA regenerates succinyl-CoA, which may enter gluconeogenesis.
• D) A large amount of ATP is generated.
• E) All reactions take place in a carboxysome.

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Definitions:

Standard

A level of quality or attainment used as a measure, norm, or model in comparative evaluations.

Selfish

Prioritizing one's own needs or desires over those of others; acting with concern for oneself above others or the common good.

Rational

Pertaining to reasoning or logical thinking, often involving a systematic process of thinking to arrive at a conclusion.

Ego

In psychoanalytic theory, the part of the personality responsible for dealing with reality, balancing the demands of the id and superego.