Considering That Virtually All Cells in Any Given Individual Contain

question 80

Multiple Choice

Considering that virtually all cells in any given individual contain the same genetic information, how is it possible to have different cell types with unique functions?

• A) Gene expression is regulated such that different cell types produce different proteins.
• B) All cells express all proteins encoded in an organism's genes but turn them on selectively.
• C) Gene expression is regulated based on the age of the organism.
• D) Only some cell types make protein products, while others do not.
• E) Cells lose unneeded genes with each cell division.

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Definitions:

Sagittal

Refers to a plane or section that divides the body into right and left portions.

Transverse

Relating to or extending across something at a right angle.

Coronal

refers to a direction in anatomy denoting a plane that divides the body into frontal (anterior) and back (posterior) parts.

Horizontal

Relating to or situated at a right angle to the vertical; parallel to the ground or to the horizon.