The increase in blood flow to a site of infection acts to
A) bring more mast cells to the site of infection.
B) facilitate the migration of the leukocytes into the interstitial space.
C) recruit more leukocytes to the site of infection.
D) wash the invading bacteria from the region of the infection.
E) increase oxygen in the region to kill the invading bacteria.
Ans: C) recruit more leukocytes to the site of infection.
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The binding of a neurotransmitter to ligand-gated K+ channels will cause ____ in the postsynaptic membrane
a. depolarization only b. hyperpolarization c. repolarization only d. apolarization e. depolarization and repolarization
When the human gene coding for insulin is introduced into a mouse embryo, the gene is correctly expressed in the
appropriate tissue. This shows that:a. tissue-specific gene expression is highly conserved during evolution. b. the introduced gene was edited by the mouse embryo for proper function. c. the introduced gene was exactly the same as the mouse gene for insulin. d. mice and humans are not closely related. e. mouse genes are not tissue specific.
Most nutrients are absorbed across the epithelium of the
A. colon. B. stomach. C. esophagus. D. small intestine. E. large intestine.
_____ mutations are important to the evolutionary process; most cancers result from _____ mutations
A. Somatic; germ-line B. Germ-line; somatic C. Germ-line; heritable D. Somatic; heritable E. Point; germ-line