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Lina20 [59]
4 years ago
7

The first organisms evolved on Earth around 4 billion years ago. The fossil record indicates that the first organisms were which

of the following?
Biology
1 answer:
ollegr [7]4 years ago
5 0
Evolution is a myth. Don't believe everything you read, and if someone is to answer your question, please include the choices after "the following" :)
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How paleontologist use fossils of known ages to determine relative ages of other fossils?
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6 0
3 years ago
Which is not the precursor for the de novo purine biosynthesis?
amm1812

The correct option is (B) Lysine.

The precursors glutamine (N2 and N9), glycine (C4, C5, and N7), aspartate (N1), co2 (C6), and folate are used to create the purine ring (C2 and C8). All are precursors to the purine ring, with the exception of lysine.

How is Purine synthesized de novo?

  • In all cells, the cytosol is where purine biosynthesis takes place.
  • There are 11 steps that are catalyzed by enzymes that build the purine ring. Each enzyme includes several monomers because it is oligomeric.
  • The reaction does not release the intermediate products that are created. They are instead transported to the next enzyme in the process.
  • The biosynthesis process in the human body can provide the body's need for purine in metabolic processes. Clinical symptoms might become unpleasant if purine synthesis is inadequate or if biosynthetic routes are aberrant.

Learn more about the Purine biosynthesis with the help of the given link:

brainly.com/question/14229639

#SPJ4

I understand that the question you are looking for is "Which of the following is not the precursor of a purine ring?

(A) Glutamine

(B) Lysine

(C) Glycine

(D) Aspartate"

7 0
1 year ago
The process of desalination removes salt from seawater using condensation methods or filtration. Which of the following is least
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There is a shortage of seawater to use for desalination.what's the answer
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