The reason(s) that the body has such difficulty combating HIV infection and preventing progression to AIDS is because
A. HIV mutates slowly.
B. HIV targets both humoral and cell-mediated immunity.
C. HIV blocks antigen recognition by macrophages.
D. HIV destroys MHC molecules.
E. HIV blocks the inflammatory response.
B. HIV targets both humoral and cell-mediated immunity.
You might also like to view...
Suppose you discover a new species of animal that does not have body segments, but is triploblastic, eucoelomate, and cephalized. Under the molecular phylogenetic scheme, you would allocate it to which phylum?
A. Mollusca. B. Echinodermata. C. Nematoda. D. Platyhelminthes. E. Arthropoda.
Osmosis is the diffusion of which of the following across a membrane?
a. Water b. Solutes c. Gradients d. Proteins
If a cell has 46 chromosomes at the beginning of mitosis, then at the end of anaphase there would be a total of
a. 23 chromatids. b. 23 chromosomes c. 92 chromosomes d. 46 chromosomes
The cell theory states that the cell is the basic unit of structure for all organisms. What smaller structure would make up the cells of all organisms?
A) cell wall B) chloroplast C) nucleus D) cell membrane