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nydimaria [60]
3 years ago
5

DNA and RNA serve what purpose within a cell and living things.

Biology
1 answer:
Lorico [155]3 years ago
4 0

Answer:

D. DNA Contains the genetic code / instructions for the cell and the living organism they build

Explanation:

DNA and RNA are nucleic acids that contain the genetic information so that a cell knows exactly what proteins it should make, what function it should serve.

Why not A: DNA and RNA don't strictly build cellular proteins; that job is up more to the ribosome, tRNA, and mRNA. While this could be acceptable, it's not as good an answer as D.

Why not B: This is incorrect.

Why not C: DNA and RNA don't do any of the dirty work of fighting off intruders; that's the job of the immune system, building antibodies, eating the viruses with white blood cells, and using the epidermis as a barrier to keep harmful things out.

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!!!!!How do radioactive elements help scientists establish how old rocks and fossils are?!!!!
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Answer:

I will give a hypothesis. Just like a tree, when you cut a tree by its trunk, you will the rings. The rings around it represents the tree's age. So when you cut rock, the pores in the rock determine whether it is an old rock or a fossil rock.

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(I mean really? That much before the DINOSOURS died? I don't think so)

◕‿◕

Hope this helps

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