The Most Ancient CO₂ Fixation Pathway in Anaerobic Phototrophic Bacteria

question 40

Multiple Choice

The most ancient CO₂ fixation pathway in anaerobic phototrophic bacteria and archaea is the

• A) reverse TCA cycle.
• B) 3-hydroxypropionate cycle.
• C) Calvin cycle.
• D) reductive acetyl-CoA pathway.
• E) glyoxylate bypass.

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Definitions:

Compulsions

Repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession or according to rules that must be applied rigidly.

Desensitization

A technique used to reduce or eliminate an organism's response to a stimulus by repeated exposure to that stimulus.

Implosion

A rapid inward collapse of a structure or material, often used in psychology to refer to a therapeutic technique for confronting fears.

Obsessive-Compulsive Disorder

A mental health disorder characterized by repetitive, unwanted thoughts (obsessions) and behaviors (compulsions) that drive an individual to act in certain ways.