Poliovirus is ingested and gains access to tissues by which portal of entry?

a. Skin
b. Parenteral
c. Mucous membranes
d. All of these
e. None of these


Answer: c. Mucous membranes

Biology & Microbiology

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A population of flowers is in Hardy-Weinberg equilibrium with an allele frequency for white flowers (w) of 40%. What percentage of the flowers will have the colored or dominant phenotype?  

A.  16% B.  25% C.  40% D.  60% E.  84% Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean?   Gather Content · What do you already know about the Hardy-Weinberg principle? How does it relate to the question?   Consider Possibilities · 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

Mycorrhizae

a. increase plant growth. b. are symbionts. c. allow a plant to absorb more water. d. increase the surface area for absorption of water and minerals. e. have all of these characteristics

Biology & Microbiology

In addition to a vertebral column, all vertebrates have

A. gills. B. scales. C. a distinctive head or skull. D. a tunic. E. an open circulatory system.

Biology & Microbiology

T or F: the right arm is ipsilateral to the right legt

What will be an ideal response?

Biology & Microbiology