B Cells Have Antigen Receptors That Bind to Antigens That

question 18

Multiple Choice

B cells have antigen receptors that bind to antigens that are either freely dissolved or present on the surface of invading/foreign cells. T cells have antigen receptors that

• A) are active only in lymph nodes.
• B) bind only to antigens present on the surface of the invading/foreign cells.
• C) bind only to freely dissolved antigens in the plasma.
• D) bind to antigens presented on major histocompatability complexes by host cells.
• E) bind to antigens that are either freely dissolved or present on the surface of invading/foreign cells.

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Definitions:

Natural Selection

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

British Naturalist

A scientist from Britain who studies the natural world, especially plants and animals.

Mutations

Changes in the DNA sequence of a cell's genome, which can lead to variations in physical traits or the development of diseases.

DNA Copies

The process of duplicating the DNA molecule, essential for cell division and reproduction.