MHC proteins
a. are always expressed on cell surfaces.
b. have embedded peptides derived from breakdown products of cell metabolism.
c. present peptide antigens.
d. are described by all of the above.
Answer: D
You might also like to view...
Transgenic organisms carry the transgene in
A) every cell. B) gametes only. C) somatic cells only. D) the cell in which it was originally introduced.
The ________ is the electron acceptor in a redox reaction.
A. oxidant B. product C. enzyme D. reductant
Although Sulfolobus solfataricus grows at pH 2 to 4, it maintains a cytoplasmic pH of about 2, thereby generating a large pH gradient across the plasma membrane.
Answer the following statement true (T) or false (F)
During which stage of mitosis are chromosomes lined up in the center of the cell?
A. Telophase B. Anaphase C. Prophase D. Metaphase