Which plants are widely planted in cities because of their resistance to air pollution?
a. lycopods
b. ginkgos
c. cycads
d. conifers
e. grasses
ANSWER: b
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A gel electrophoresis is performed, but when the gel imager is used, no bands appear. The researcher might have forgotten to:
_____ add electric current. _____ add antibody. _____ ligate the DNA fragments together. _____ include DNA dye. _____ include an RNA probe. 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 gel electrophoresis? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
This animal is acoelomate, hermaphroditic, and
adds new segments to its body as it grows. This animal is ___.
a. a planarian b. a tapeworm c. a fluke d. an earthworm e. more than one of these
What atom forms the backbone of almost all biological molecules?
A) hydrogen B) nitrogen C) carbon D) sulfur E) phosphorus
Enteric hepatitis is fatal for 20% of people in which of the following groups?
A. infants under the age of 1 year B. teenagers C. young adults D. pregnant women E. elderly men