A Number of Tumors and Viruses (E

question 137

Multiple Choice

A number of tumors and viruses (e.g., Epstein -Barr) are able to escape cytotoxic T cell degradation by inhibiting what?

• A) the production of the class I MHC molecule
• B) the production of the class II major histocompatibility (MHC) molecule
• C) the activation of the complement system
• D) helper T cell activation
• E) tumor antigen expression

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Definitions:

Numbered Units

Quantitative values assigned to items or units in order to denote quantity, order, or position.

Youngest

This term relates to the latest or most recently developed strata or earth materials in geological studies.

Ocean Basins

large depressions on the Earth’s surface that are filled with ocean water.

Continents

Large continuous areas of land on Earth, which are currently identified as seven in number, including Africa, Antarctica, Asia, Australia, Europe, North America, and South America.