Allergy is a ________ response to __________ antigens
a. hypersensitive; environmental
b. hyposensitive; cellular
c. normal level; microbial
d. mixed; protein
e. mixed; microbial
A
You might also like to view...
The kidneys secrete erythropoietin to stimulate red blood cell production by bone marrow.
a. true b. false
When sperm enter the epididymis, they ________
A) are mature B) are incapable of moving on their own C) are ready to fertilize an egg D) come from the vas deferens
Which of the following would prevent an organism from becoming part of the fossil record when it dies?
A) It is fully decomposed by bacteria and fungi. B) It is buried in fine sediments at the bottom of a lake. C) It gets trapped in sap. D) It is frozen in ice.
The parietal cells of the stomach are responsible for producing
A) mucus. B) pepsin. C) hydrochloric acid. D) bile.