Identify the following as either specific or nonspecific immune responses, and for each provide a onesentence
explanation of its function or role.
A. macrophages
B. natural killer cells
C. memory cells What will be an ideal response?
A. Macrophages participate in nonspecific immune responses by phagocytosis of pathogens that have
pathogen-associated molecular patterns on their cell surface.
B. Natural killer cells participate in nonspecific immune response by destroying tumor cells with
abnormal MHC I displays on the cell membrane.
C. Memory cells are specific T or B cells generated by previous exposure to specific antigens.
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What ion is mainly responsible for seawater being slightly alkaline?
a. Carboxylic acid b. Carbon dioxide c. Bicarbonate d. Nitrogen
Seeds allowed plants to colonize dry land
Indicate whether the statement is true or false
The conspicuous structures on the surface of a dead tree that indicate a fungus is growing inside are for
A) defense. B) pollination. C) feeding. D) show only. E) reproduction.
A(n) (catalyst/enzyme) is any molecule that speeds up a chemical reaction
What will be an ideal response?