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Which of These Amino Acids Is Formed from a Precursor

question 87

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Which of these amino acids is formed from a precursor amino acid only after the latter has been incorporated into a polypeptide chain?


Definitions:

Hypothalamus

A region of the brain that regulates important functions, including temperature control, thirst, hunger, sleep, mood, and the release of hormones.

Midbrain

A region of the brainstem involved in vision, hearing, motor control, sleep/wake, arousal, and temperature regulation.

Hayflick Limit

Genetically controlled limit, proposed by Hayflick, on the number of times cells can divide in members of a species.

Maximum Life Span

The upper boundary of life expectancy for an organism, representing the greatest age an individual of a species can live under ideal conditions.

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