Carbon in the One-Carbon Pool Can Be in the 5-Methyl-THF

question 34

Multiple Choice

Carbon in the one-carbon pool can be in the 5-methyl-THF form or the 5,10-methylene-THF form. Which statement is FALSE?

• A) Both forms of carbon (methyl and methylene) can be used directly for thymidylate synthesis.
• B) The methylene group of 5,10-methylene-THF can be oxidized to generate 5-methyl-THF and vice versa.
• C) B₁₂ is a cofactor for utilization of the methyl group in the conversion of homocysteine to methionine.
• D) More than one is false.

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Definitions:

Extra-sensory Perception

The claimed ability to gain information through means beyond the traditional five senses; also known as ESP or sixth sense.

Autobiographical Memory

The aspect of memory that involves the recollection of personal experiences and events.

Working Memory

A cognitive system with a limited capacity that is responsible for temporarily holding information available for processing.

Long-term Memory

The phase of the memory process that is concerned with the storage of information over an extended period.