Antigens displayed on the surface of antigen-presenting cells and viral-infected cells are bound to specific classes of

____________________ molecules. Fill in the blank(s) with the appropriate word(s).


MHC
major histocompatibility complex

Biology & Microbiology

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Archaeopteris, the first known tree, had what characteristics?

_____ It occurred in forests. _____ It possessed wood. _____ It reproduced by seeds. _____ It had a eustele. _____ It had a vascular cambium.

Biology & Microbiology

Enzymes are

a. biological catalysts. b. agents that speed up cellular reactions. c. proteins. d. all of the above.

Biology & Microbiology

Antibiotics are most likely to be effective in the treatment of infections caused by

A) bacteria. B) viruses. C) parasitic worms. D) lice and ticks. E) prions.

Biology & Microbiology

Patients suffering from familial adenomatous polyposis coli have typically been found to have _________, which is the site of the _________.

a) a small chromosome 5 deletion, APC oncogene b) a small chromosome 5 duplication, APC tumor-suppressor gene c) a small chromosome 5 deletion, APC tumor-suppressor gene d) a small chromosome 15 deletion, RP tumor-suppressor gene e) a small chromosome 6 deletion, APC tumor-suppressor gene

Biology & Microbiology