Host-microbe interactions
A) do not involve host factors.
B) never result in the normal species of the microbiota causing disease.
C) are generally commensal.
D) are always harmful.
E) involve a dynamic give-and-take between the microbe and the host.
Answer: E
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A mutation that changes one particular amino acid into another can affect the functioning of other amino acids farther away in the primary sequence due to
A) the presence of prions. B) protein folding. C) jumping genes. D) the tendency for further mutations to occur.
Explain why a high fever (over 105ºF) can be fatal for a person. Consider your knowledge of enzyme structure and the interactions between a specific enzyme and its substrate
What will be an ideal response?
From the outside of a tree to its center, which
of the following is the correct order of appearance? 1. periderm 2. vascular cambium 3. sapwood 4. seconary phloem 5. cork cambium 6. heartwood
a. 1-2-4-5-6-3 b. 1-5-4-2-3-6 c. 1-4-5-2-6-3 d. 1-3-2-5-4-6 e. 1-2-4-5-3-6
A virion consists of all but the following:
a. Capsomeres b. Nucleic acids c. Ribosomes d. In some viruses a viral envelope e. Capsid