CD4 molecules are found on T ________ cells, whereas CD8 molecules are characteristic of T________ cells.

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


helper; cytotoxic

Biology & Microbiology

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The hexameric model of DNA unwinding proposes that:

A. DNA strands are separated prior to helicase binding. B. one dimer is responsible for ATP hydrolysis. C. two dimers rotate the responsibility of ATP hydrolysis. D. three dimers rotate the responsibility of ATP hydrolysis. E. dimer conformational changes drive ATP hydrolysis.

Biology & Microbiology

Many chemotherapy drugs act by arresting the cell in m phase of the cell cycle.

a. true b. false

Biology & Microbiology

Selective uptake of molecules into a cell by vacuole formation after they bind to specific receptor proteins in the plasma membrane.

What will be an ideal response?

Biology & Microbiology

The term that literally means "against putrefaction" is

A) antisepsis. B) prokaryote. C) chemotherapy. D) recombinant technology. E) nosocomial.

Biology & Microbiology