The Living World 8th Edition by George Johnson

تمرين 9

Animal viruses enter animal cells by
A) exocytosis.
B) matching a marker on the surface of the virus to a complementary marker on the surface of a cell.
C) contacting the host cell with protein tail fibers.
D) contacting any place on the cell's membrane with the virus's protein coat.
Prior to entry, the _________ glycoprotein of the HIV virus recognizes the ______ receptor on the surface of the macrophage.
A) CCR5; gp120
B) CXCR4; CCR5
C) CD4; CCR5
D) gp120; CD4