Vaccinations protect against future exposure to disease organisms by
A) stimulating suppressor T cells. B) increasing complement proteins.
C) increasing the number of red blood cells. D) forming memory cells.
D
You might also like to view...
This figure suggests that adding more and more nutrients over time will result in
A) an increase in species diversity. B) an increase in species evenness. C) a decrease in overall productivity. D) a decrease in species diversity.
Why do scientists repeat their experiments over and over again?
a. They never get it right the first time. b. They can never be sure what procedural steps they followed the first few times. c. They must make sure the results were not an accident and that they are repeatable. d. They simply have extra time and resources that must be used.
The "run" in bacterial motility is the result of (clockwise/counterclockwise/whiplike) rotation of the flagella
What will be an ideal response?
Bicarbonate that neutralizes stomach acid is produced by the
A. small intestine. B. duodenum. C. liver. D. large intestine. E. pancreas.