The cellular binding of IgE during an allergic reaction causes the release of which chemicals?
a. heparin and bradykinin
b. prostaglandins and histamine
c. histamine and serotonin
d. prostaglandins and bradykinin
e. serotonin and prostaglandins
B
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Sedimentation converts ions and particles from the ____ into rocks of the ____
a. available inorganic compartment; unavailable inorganic compartment b. unavailable inorganic compartment; unavailable organic compartment c. available inorganic compartment; available organic compartment d. available inorganic compartment; unavailable organic compartment e. available organic compartment; unavailable inorganic compartment
The white matter differs from gray matter in that ____
a. white matter is found in the brain, and gray matter is found in the spinal cord b. white matter consists of bundles of myelin-sheathed axons, and gray matter consists of cell bodies, dendrites, and neuroglial cells c. white matter transmits sensory information, and gray matter transmits motor information white matter consists of bundles of myelin-sheathed axons, and gray matter consists of cell bodies, dendrites, and neuroglial cells d. white matter is associated with the sympathetic nervous system, and gray matter is associated with the parasympathetic nervous system e. white matter contains mostly interneuronal cell bodies and grey matter does not
For applications in gene therapy, what is the most favorable characteristic of retroviruses?
A) Retroviruses have an RNA genome. B) Retroviruses possess reverse transcriptase. C) DNA copies of retroviral genomes become integrated into the genome of the infected cell. D) Retroviruses mutate often.
Mosquitoes have a short life span and produce a very large number of eggs. This is typical of a/an:
A) density dependent species. B) K-selected species. C) r-selected species. D) equilibrium species.