In the lungs, _______.
a) both oxygen and carbon dioxide enter the blood
b) oxygen enters the blood while carbon dioxide leaves the blood
c) carbon dioxide enters the blood while oxygen leaves the blood.
d) both oxygen and carbon dioxide leave the blood.
Ans: b) oxygen enters the blood while carbon dioxide leaves the blood
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If a person had the thymus gland removed, which process would be most affected in his or her body?
a. maturation of B cells b. production of B cells c. production of T cell d. maturation of T cells
The human genome contains approximately 40,000 genes
a. True b. False
A protein kinase activating many other protein kinases is an example of _____.
a. deactivation b. sensitization c. mutualism d. a cellular response e. amplification
T cells
A) mature in the bone marrow. B) circulate in low numbers in the blood. C) produce antibodies. D) function in helping other immune cells.