Each HIV particle possesses a ________ on its surface,called gp120,that precisely binds to a protein,called CD4,that is found on the surfaces of the immune system cells called macrophages and T cells.
A)nucleic acid
B)phospholipid
C)polysaccharide
D)glycolipid
E)glycoprotein

Question

Quizplus · Accepted Answer

The surface protein on HIV particles that binds to the CD4 protein on immune cells is called gp120, which is a glycoprotein. Glycoproteins are proteins that have carbohydrates attached to them, and they are often involved in cell-cell recognition and signaling. Therefore, choice E, glycoprotein, is the best choice for the missing term.

Each HIV Particle Possesses a ________ on Its Surface,called Gp120,that