Which is NOT true about AIDS?
A. It is caused by a retrovirus.
B. It is caused by a virus that contains RNA.
C. It is transmitted by intimate contact with infected blood, sexual intercourse with an infected partner, or by an infected mother to her fetus or breast-fed infant.
D. Certain unusual cancers such as Kaposi's sarcoma co-occur with relatively high frequency.
E. The HIV virus preferentially enters and disables B cells.
E
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Pacemaker activity refers to spontaneous depolarizations resulting from
a. shifts in passive ionic fluxes accompanying b. cyclical changes in Na+-K+ pump activity c. automatic changes in channel permeability d. both a and b e. both a and c
Which of the following is produced by certain activated t-lymphocytes to induce apoptosis of infected cells?
A. Perforins
B. Granzymes
C. Interferon
D. Lysozyme
The movement of molecules and ions from the peritubular capillaries into interstitial fluid and then into the nephron tubule is called ________.
A. secretion B. excretion C. reabsorption D. filtration
Cardiac muscle can only use glucose as a source of organic fuel.
Answer the following statement true (T) or false (F)