1. Biology
2. Human Biology
3. Human Anatomy and Physiology
4. Immune System
5. 102154

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

Please confirm that I have chosen the correct answers.

29. The ability to mount an efficient secondary antibody response depends on
a. Memory T and B cells
b. High concentrations of IgA antibody
c. Cross-linking of IgM antibodies
d. All of the above are correct

I choose answer (d)

32. A natural barrier to the intestine is provided by the extremely alkaline environment of the stomach contents. (Does the alkalinity of the stomach provide a natural defense against disease?)
a. True
b. False

My choice is False since the stomach is acidic.