What is the backbone of DNA composed of (choose all that apply)
nitrogen base
hydrogen...
Answers: 2
Biology, 21.06.2019 20:10
Which best describes a rhinovirus? o a. a virus that causes a common cold o b. a protective shell around a virus o c. a tube the comes off a virus o d. a piece of dna transferred by a virus
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Biology, 21.06.2019 23:30
The organelle pictured is found in cells of and is theorized to have once been an independent organism.
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Biology, 22.06.2019 00:30
When analyzing tree rings, what do scientists assume a thin ring indicates?
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Biology, 22.06.2019 05:30
What is the compliment dna strand to the following sequence: ttgactaggcta
Answers: 1
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