The structure of dna is held together by ?
A. purines pairing with pyridimines
B....
Biology, 21.03.2020 22:55 anonymous1813
The structure of dna is held together by ?
A. purines pairing with pyridimines
B. hydrogen bonds between adenine and thymine
C. attraction between cytosine and guanine.
D. All of the above
Answers: 1
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An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?
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Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
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Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things
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