Which of the following may be added to normal media to make it more selective for staphylococci?
A. 7.5% salt
B. 0.5% HCl
C. 1.0% glucose
D. 5.0% mannose
A.
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Immunoglobins associate with the adapter molecules Ig? and Ig?
Indicate whether the statement is true or false.
Scientists have discovered that when they provide supplemental food for hares, their density tripled. The figure above shows cycles of lynx and hare populations over a century's time. What do you predict would happen to the lynx and hare populations in an area where hares were provided supplemental food for one year?
A. The lynx population and the hare population would increase simultaneously, and stay at a stable high level permanently.
B. The hare population would increase, but the lynx population would be unaffected.
C. The lynx population would decrease as hares increased due to exploitative competition, then slowly rise back to the original level.
D. The lynx population would increase 1-2 years after the hares increased, then both would continue cycling down and up.
Multiple effects of a single gene is known as
a. expressivity. b. penetrance. c. codominance. d. pleiotropy. e. multiple alleles.
Humans inhale by negative pressure.
Answer the following statement true (T) or false (F)