In cell-mediated immunity, what happens immediately after the infected cell displays the antigen-MHC complex?

a. A virus invades the cell.
b. Specific T cytotoxic cells are activated.
c. Effector T cytotoxic cells migrate to the infection site.
d. Cytokines are released by T helper cells.
e. Enzymes destroy the target cells.


b

Biology & Microbiology

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The lateral line system provides ________ with a sense of "distant touch," enabling these animals to sense objects that reflect pressure waves and low-frequency vibrations.  

A.  adult amphibians B.  reptiles C.  birds D.  mammals E.  fish

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MPF becomes active at the end of Gap 2.

a. true b. false

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How many chromosomes are found in a human somatic cell nucleus?

What will be an ideal response?

Biology & Microbiology

The volume of air exchanged with the environment during an unforced breath is called

A) inspiratory reserve volume. B) tidal volume. C) vital capacity. D) inspiratory capacity. E) expiratory reserve volume

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