Will treating a viral infection with antibiotics affect the course of the infection?

A) No; antibiotics work by inhibiting enzymes specific to bacteria. Antibiotics have no effect on eukaryotic or virally encoded enzymes.
B) No; antibiotics do not kill viruses because viruses do not have DNA or RNA.
C) Yes; antibiotics activate the immune system, and this decreases the severity of the infection.
D) Yes; antibiotics can prevent viral entry into the cell by binding to host-receptor proteins.


A

Biology & Microbiology

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Urine via percutaneous aspiration is:

a. acceptable. b. not acceptable.

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For sodium to accumulate rapidly in a neuron,

a. a stimulus above the threshold must open sodium gates in an accelerating manner. b. the wave of repolarization must occur to reestablish a resting potential. c. there must be a dramatic increase in the negative charge of the cytoplasm. d. a voltage surge must cause the sodium gates to close. e. the potassium gates must first open.

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Explain the differences between basic and acidic dyes and how they are used

What will be an ideal response?

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Which one of the following statements about transport of nutrients in phloem is correct?

A) Solute particles are actively transported from phloem at the source. B) Companion cells control the rate and direction of movement of phloem sap. C) Differences in osmotic concentration at the source and sink cause a hydrostatic pressure gradient to be formed. D) A sink is the part of a plant where a particular solute is produced.

Biology & Microbiology