A small, red, hard but painless lesion is a sign of infection with (gonorrhea/herpes/syphilis)
What will be an ideal response?
syphilis
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The rate of diffusion of molecules would be fastest in a cell with an
A. internal concentration of 45 percent and an external concentration of 50 percent in cold temperatures. B. internal concentration of 50 percent and an external concentration of 12 percent in cold temperatures. C. internal concentration of 50 percent and an external concentration of 12 percent in warm temperatures. D. internal concentration of 40 percent and an external concentration of 35 percent in warm temperatures.
Communication between animals is
A. usually primarily instinctive. B. common between different species. C. primarily a learned activity. D. rare.
Suppose you are studying photosynthesis in a research lab. You grow your plants in a chamber with a source of water that has a radioactively labeled oxygen atom. What photosynthetic product will be radioactive?
A) NADPH B) CO2 gas C) ATP D) Glucose E) O2 gas
In horses, there are four alleles at the A locus. Arranged in dominance sequence, they are A (wild), ab (bay), ac (brown), ad (black) ? If you bred several bay mares whose sires were brown to a brown stallion whose sire was black, what are the genotypes of the parents; what type of offspring would be produced; and in what proportion? ?
A. aaad x acad; 1/2 brown, 1/2 black B. abac x acad; 1/2 bay, 1/2 brown C. Aab x acad; 1/2 bay, 1/2 wild D. Aab x acad; all wild E. adab x acad; all black