After responding to complement, the main function of dendritic cells is to present antigen to which cells in an adaptive immune response?
A. Mast cells
B. Basophil
C. B cells
D. NK cells
E. T cells
Answer: E
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What process resulted in the loss of heath hens in North America?
A) competitive exclusion B) an extinction vortex C) a mutualism D) the negative effect of heterozygosity on fitness
The term development refers to all the changes that occur during the life cycle of an organism. __________________ Indicate whether the statement is true or false
Which of the following is required for the secretion of neurotransmitters in response to an action potential?
(a) neurotransmitter receptors (b) Na+-K+ pumps (c) voltage-gated K+ channels (d) voltage-gated Ca2+ channels
Assuming some bacteria did enter her body, an example of the second line of defense against
these bacteria includes __________.
a. phagocytes b. mucus c. macrophages d. antibodies