When a person is tested for HIV, the test is considered positive if _______ to the HIV are present.  

A.  bacteria
B.  antigens
C.  antibodies
D.  T-cells
E.  natural killer cells


C.  antibodies

Biology & Microbiology

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The term antiparallel The term antiparallel

Biology & Microbiology

The cell in micrograph "II" is at which stage of

the cell cycle?

a. prophase b. telophase c. interphase d. anaphase e. metaphase

Biology & Microbiology

Nodes of Ranvier are intervals between Schwann cells that the conduction of nerve impulses.

A. slow down B. have no effect on C. initiate D. speed up E. completely block

Biology & Microbiology

Novocain would work at which point in Figure 41-3?


a. 1
b. 2
c. 3
d. E
e. 4

Biology & Microbiology