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:

Transcription

The process by which the genetic information encoded in DNA is copied into messenger RNA, leading to protein synthesis.

tRNA Triplet

A sequence of three nucleotides in transfer RNA that corresponds to a complementary codon in messenger RNA during protein synthesis.

mRNA

Messenger RNA, a type of RNA that conveys genetic information from DNA to the ribosome, where proteins are synthesized.

Codon

A sequence of three nucleotides in DNA or RNA that specifies the addition of a specific amino acid during protein synthesis.