All of the following participate in the adherence of prokaryotic cells (directly or through biofilms)
What will be an ideal response?
slime layers, fimbriae, and capsules
NOT plasma membranes
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Many studies of potentially useful new drugs involve the use of two groups of people: One group takes the drug and another group takes a placebo (like a sugar pill). Members of both groups do not know whether they are taking the drug or the placebo. What is the reason for designing these experiments this way?
What will be an ideal response?
Saltatory conduction is a term applied to the "jumping" movement of action potentials
A. from one neuron to another. B. along the postsynaptic membrane from dendrite to axon hillock. C. along myelinated axons. D. across electrical synapses. E. in two directions at the same time.
Which factor is most important in determining the distribution of organisms in aquatic biomes?
a. interspecies composition b. dominant vegetation
c. distance from shore d. salinity e. intraspecies composition
Which of the following may have cell walls containing teichoic acids?
A. Gram-negative bacteria only B. Gram-positive bacteria only C. archaea D. both Gram-positive and Gram-negative bacteria E. all prokaryotes