Memory cells may inhibit the immune response after an antigen has been neutralized.
a. true
b. false
Answer: b. false
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Which trophic level in a food chain would it be most damaging to remove? What will be an ideal response?
The Irish potato famine in the mid 1840s was caused by which heterotrophic protist decomposer that secreted digestive enzymes onto potatoes?
a. A water mold b. A red algae c. A nematode worm d. A protozoan e. A fungus
Prokaryotes, such as bacterial cells, differ from eukaryotes in that eukaryotes
A. have a simpler structure relative to prokaryotes. B. possess membrane-bound organelles. C. are relatively small compared to prokaryotes. D. lack a membrane-bound nucleus. E. store most of their DNA within the cytoplasm.
Low-level disinfectants are sufficient to remove microbes from which of the following equipment tiers?
A) semicritical B) nonessential C) noncritical D) vital E) non-vital