One of Chargaff’s rules is _____
a. different organisms have different proportions of adenine and guanine
b. the DNA molecule is a double helix
c. the two strands in a DNA molecule run in opposite directions
d. the backbone of a DNA molecule is on the outside
e. the backbone of the DNA is comprised of alternating sugars and phosphates
ANSWER: a
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A) body of water is very large. B) Sun is setting. C) Earth, Moon, and Sun are in line. D) Moon and Sun are at right angles to the Earth.
In Figure 55-2, the gull has the highest concentration of DDT because it is:
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Explain the reciprocal nature of the net chemical reactions for photosynthesis and respiration.
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The tails of some bacteriophage ________.
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