Place the following events of an inflammatory

event in response to bacterial infection in
proper order.
1. activated complement binds to bacteria
2. capillary permeability increased
3. phagocytes engulf bacteria
4. mast cell receptors bind to bacterial antigens
5. signaling molecules cause arterioles to
widen



a. 4-5-2-1-3
b. 4-3-1-2-5
c. 5-2-1-4-3
d. 1-3-4-2-5
e. 5-2-4-1-3


A

Biology & Microbiology

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Deforestation results in

a. increased air temperatures. b. decreased soil fertility. c. decreased transpiration rates of individual plants. d. increased air temperatures and decreased soil fertility. e. increased air temperatures, decreased soil fertility, and decreased transpiration rates of individual plants.

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Chromosome composition within a given species is variable.

a. true b. false

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Mutations affect Hardy-Weinberg equilibrium by

A. allowing gene flow to increase. B. keeping allele frequencies unchanged between generations. C. decreasing the genetic variation that affects natural selection. D. altering frequencies of particular alleles within a population.

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You expose a tube of bacteria to ultraviolet radiation to induce mutations. You then spread the bacteria on a plate containing media with all known required nutrients and wait until separate colonies form. Finally, you use replicate plating to transfer a print of this plate to an additional sterile plate containing minimal media plus a known required nutrient for the bacteria. Based on this protocol, colonies growing on the plate with minimal media would include what type of cells?  

A.  only wild-type bacteria B.  only mutant bacteria C.  mutants that only require the supplied nutrient D.  Both wild-type and all mutants E.  wild-type bacteria and the mutants that only require the supplied nutrient Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about growth media? How does it relate to the question? · What other information is related to the question? Which information is most useful?   Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?   Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?  

Biology & Microbiology