Which of the following is TRUE of both T cells and B cells?

A. They are lymphocytes.
B. They recognize specific antigens on the cell surface.
C. They have class I MHC molecules on their cell surface.
D. They are involved in the humoral immune response.
E. All of the responses are correct.


E. All of the responses are correct.

Biology & Microbiology

You might also like to view...

In the identification of mycobacterial isolates, the catalase test involves the:

a. breakdown of phenolphthalein disulfate into phenolphthalein and other salts. b. measurement of the height of a column of bubbles of oxygen. c. production of a lipase that is able to hy-drolyze the catalase. d. development of a pink-to-red color, indi-cating a positive result.

Biology & Microbiology

Viruses are unable to multiply outside of a host cell.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Duffy factor is due to a chemical that occurs on the membranes of red blood cells and is sometimes used as a blood-typing attribute in the same way that ABO and Rh factor blood types are used

Recent research has found that people with Duffy factor are about 40% less likely to be infected with HIV, given similar circumstances. Given that HIV affects white blood cells, how would you characterize the Duffy factor gene, and why?

Biology & Microbiology

What error of meiosis leads to both a duplication and a deletion?

A) unequal crossing over B) X-ray chromosomal breakage C) replication cross formation D) replication errors E) D loop formation

Biology & Microbiology