Answer:
B ) Valves
Explanation:
Valves allow blood to flow only in one direction and prevent the backflow.
I'm pretty sure the answer is going to be transcription. RNA can be viewed as a readable form of DNA for the ribosome to then translate into a protein.
In short, if DNA is being used as a template for mRNA, then it's transcription. If the RNA is being read to create a protein then it's translation.
Answer:
UGA is the start signal for a translation.
The meselson-stahl experiment demonstrated that dna replication produces two DNA molecules each composed of the nitrogen isotopes.
<h3>
What was the conclusion of the meselson-stahl experiment?</h3>
Based on observations and experimental results, Meselson and Stahl concluded that DNA molecules can reflect semi-conservatively. Investigation of semi-conservative nature of replication of DNA or the copying of the cells, DNA failed to cease there.
1958, Matthew Meselson and Franklin Stahl carried out an test on E. coli which divides in 20 minutes, to take a look at the replication of DNA. 15N (heavy) and 14N (normal) are isotopes of nitrogen, which may be outstanding primarily based totally on their densities through centrifugation in Caesium chloride (CsCl).
Read more about the Caesium :
brainly.com/question/6061477
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