What step of inflammation is caused by histamine released from mast cells?
A) Macrophages engulf debris and foreign matter.
B) Additional leukocytes are recruited to the region.
C) Infection is cleared by phagocytosis.
D) Foreign matter is contained.
E) Capillaries dilate and become more permeable
Ans: E) Capillaries dilate and become more permeable
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Which of the following is not a type of sequence identified by gene annotation?
A. topoisomerase B. noncoding RNA C. single copy gene D. tandem repeat E. simple sequence repeat
Which is true of leukocidins?
A. They are superantigens. B. They kill neutrophils. C. They make holes in host cell membranes. D. They bind to Fc regions of antibodies.
Female gonads are regulated by __________ hormone and luteinizing hormone. Fill in the blank(s) with the appropriate word(s)
In peas, a gene controls flower color such that R = purple and r = white. In an isolated pea patch, there are 36 purple-flowering plants and 64 white-flowering plants. Assuming Hardy-Weinberg equilibrium, what is the value of q for this population?
A) 0.36 B) 0.64 C) 0.75 D) 0.80