Scientists Isolate Cells in Various Phases of the Cell Cycle

question 22

Multiple Choice

Scientists isolate cells in various phases of the cell cycle. They isolate a group of cells that have 1½ times more DNA than G1 phase cells. What is the most likely part of the cell cycle from which these cells were isolated?

• A) between the G1 and S phases in the cell cycle
• B) in the G2 phase of the cell cycle
• C) in the M phase of the cell cycle
• D) in the S phase of the cell cycle

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Definitions:

Orbicularis Oculi

A muscle encircling the eye socket, involved in closing the eyelids.

Crow's Feet

Fine lines and wrinkles that form around the outer corners of the eyes, often associated with aging or frequent exposure to sunlight.

Depressor Anguli Oris

A facial muscle associated with frowning, drawing the corners of the mouth downward.

Suprahyoid

A group of muscles located above the hyoid bone that function in swallowing and the movement of the tongue.