Cells Conserve Energy and Resources by Making Active Proteins Only

question 20

Multiple Choice

Cells conserve energy and resources by making active proteins only when they are needed.If a protein is not needed,which of the following methods of control would be the most energy-efficient?

• A)block transcription
• B)degrade the mRNA after it is made
• C)prevent translation of the mRNA
• D)degrade the protein after it is made

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Definitions:

Thymus Gland

A lymphoid organ situated in the neck of vertebrates that produces T-cells for the immune system.

Estrogen

A group of steroid hormones that promote the development and maintenance of female characteristics in the human body.

Pelvic Cavity

The body cavity located within the pelvis, housing organs such as the bladder, rectum, and for women, reproductive organs.

Erythropoietin

A hormone produced primarily by the kidneys that stimulates the production of red blood cells.