DNA Is Composed of Four Nucleosides: Adenosine,cytidine,thymidine,and Guanosine

question 27

Multiple Choice

DNA is composed of four nucleosides: adenosine,cytidine,thymidine,and guanosine.If scientists introduced radioactive thymidine into the growth medium of the cells,it would be incorporated into the DNA molecule

• A)at any point in the cell cycle.
• B)when centromeres split so the two chromosomes can be separated.
• C)during DNA replication.
• D)as the cell enters G₁ of interphase.

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Definitions:

Anal Sphincter Muscles

A group of muscles surrounding the anus that control the passage of feces, maintaining continence.

Chyme

Digested products that leave the stomach through the small intestine and then pass through the ileocecal valve.