Major histocompatibility complex (MHC) molecules are what type of membrane protein?

a. enzyme
b. anchoring protein
c. receptor protein
d. recognition protein


Answer: d. recognition protein

Biology & Microbiology

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In S. pyogenes, which of the following interferes with phagocytosis?

A. M protein B. Protein A C. Collagen D. Pilin

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Each of the following is associated with F factor transfer from an F+ bacterium to an F? bacterium except

A) transfer involves conjugation. B) transfer of the plasmid begins at the plasmid origin of transfer. C) transfer of the plasmid converts the original F+ cell to an F? cell. D) following transfer, the F factor can become integrated into the F? cell genome to generate an Hfr cell. E) All the above are associated with the F factor transfer.

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Chromatin is composed of DNA and special packaging proteins called hopanoids

Indicate whether the statement is true or false

Biology & Microbiology