The primary hormone producing organ important to the "fight-or-flight" response is the
A. thyroid gland.
B. adrenal gland.
C. gonad.
D. heart.
E. pituitary gland.
B. adrenal gland.
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Some viruses can be crystallized and their structures analyzed. One such virus is yellow mottle virus, which infects beans. This virus has a single-stranded RNA genome containing about 6300 nucleotides. Its capsid is 25-30 nm in diameter and contains 180
If the yellow mottle virus begins its infection of a cell by using its genome as mRNA, which of the following would you expect to be able to measure? A) replication rate B) transcription rate C) translation rate D) accumulation of new ribosomes E) formation of new transcription factors
The search for a(n) ____ treatment led to the discovery that DNA carries genetic information
a. pneumonia b. AIDS c. tuberculosis d. influenza e. SARS
The organism in the above photograph has which of
the following structural systems? a. cartilaginous b. bone c. hydrostatic d. chitinous e. none of these
When the lining of the small intestine secretes more water than the large intestine can absorb, what
develops? a. colitis b. constipation c. diarrhea d. Crohn's disease e. Salmonellosis