A Group of Cells Is Assayed for DNA Content Immediately

question 12

Multiple Choice

A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA per nucleus. How many picograms would be found at the end of S and the end of G2?

• A) 8; 8
• B) 8; 16
• C) 16; 8
• D) 16; 16
• E) 12; 16

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Definitions:

Clonal Selection Theory

A theory in immunology that explains how the immune system responds to specific antigens by activating the clone of cells that can recognize and attack the invader.

Antigen

Foreign substance, usually a protein or a polysaccharide, that stimulates the immune system to react, such as to produce antibodies.

T Cells

A type of white blood cell that plays a critical role in the immune system, especially in the adaptive immune response, by identifying and killing infected cells or orchestrating the immune response.