Enzyme found in retroviruses that produce DNA from an RNA template
(A) DNA ligase
(B) DNA polymerase
(C) RNA polymerase
(D) Restriction enzyme
(E) Reverse transcriptase
Ans: (E) Reverse transcriptase
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Which of the following is often associated with poultry products?
A. Salmonella B. Campylobacter C. Pseudomonas D. Lactobacillus E. Salmonella AND Campylobacter
The most common isotope of carbon has an atomic number of 6 and a mass number of 12, while the
most common isotope of oxygen has an atomic number of 8 and a mass number of 16. A molecule of CO2 made up of these common isotopes has a molecular weight of ____.
a. 28 b. 44 c. 56 d. 14 e. 22
Why are carrots said to be good for you?
A. That is just an old wive's tale. B. Beta-carotene, the orange pigment in carrots, is a precursor to Vitamin A and retinal, the cofactor in photopigments. C. Beta-carotene, the orange pigment in carrots, is necessary to form lens proteins. D. Carrots have large amounts of glutamate, a neurotransmitter that activates sensory neurons. 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 carrots? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Bioluminescence of deep-sea animals may be used for all of the following except:
a. attraction of prey. b. detection and identification of mates. c. countershading. d. photosynthesis. e. startling a predator.