During the Translation of MRNA Molecules, the New Polypeptides Are

question 83

Multiple Choice

During the translation of mRNA molecules, the new polypeptides are often directed to specific parts of the cell by the presence or absence of short sequences of amino acids called signal peptides. Which of the following would you expect to find in the polypeptide that will eventually fold to become a histone protein?

• A)no signal peptide
• B)an amino terminal signal peptide
• C)an internal signal peptide
• D)a signal anchor peptide

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Definitions:

Amygdala

Involved in memory, decision-making, and emotional reactions, the amygdala is critical in how we assess and respond to environmental threats and rewards.

Medulla

The medulla is a section of the brainstem involved in autonomic functions such as breathing, heart rate, and blood pressure control.

Hunger-Dampening

The process or effect of reducing or suppressing the sensation of hunger.

Leptin

A hormone produced by adipose (fat) cells that helps to regulate energy balance by inhibiting hunger, thereby influencing body weight and fat mass.