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Ilya [14]
2 years ago
5

Which two Kingdoms are nearly the same, except for where they can survive?

Biology
1 answer:
natita [175]2 years ago
4 0

Explanation:

C. Eubacteria and Archaebacteria

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The chemical mechanisms used to avoid errors in protein synthesis are different from those used during DNA replication. DNA poly
Savatey [412]

Answer:

(C) Aminoacyl-tRNA synthetases have an additional active site that binds to non-cognate tRNAs. The tRNAs that bind to this second active are hydrolyzed and released from the enzyme.

Explanation:

In case of translation, proof reading is done by aminoacyl-tRNA synthetases only. Aminoacyl-tRNA synthetases have two mechanisms to avoid error during translation which are mentioned as under:

<u>(1) Chemical proof reading:</u> Incorrect amino acids rather than being hydrolyzed in catalytic pocket get hydrolyzed in editing pocket and thus they hardly get attached to tRNA.  

For example: For distinguishing similar amino acids like isoleucine and valine, isoleucyl-tRNA synthetase uses a second active site which is meant for only valine not for isoleucine. In this particular site, valine which had entered the enzyme is cleaved away with the help of editing reaction after which the enzyme is well prepared to process isoleucine which is the correct amino acid for this enzyme.

<u>(2) Kinetic proof reading: </u>Even if an incorrect amino acid has entered a particular aminoacyl-tRNA synthetase, it does not cause appropriate conformational change in the enzyme because of which the incorrect amino acid loosens from the enzyme and does not get incorporated.

Note: In this example, only chemical proof reading is mentioned not kinetic proof reading.

5 0
3 years ago
Which two hypotheses can be supported with quantitative data?
Katena32 [7]
The answer would be A and E

(I explained on the other one)
4 0
3 years ago
......................
steposvetlana [31]
.........................
6 0
3 years ago
25 PTS Need Help!!!
Citrus2011 [14]

1st image I think would be the answer


3 0
3 years ago
Read 2 more answers
If a single strand of a gene contains 726 bases, 242 amino acids will make up the polypeptide prepared from it, assuming every b
Mazyrski [523]

The answer is true. During translation of mRNA, the nucleotides are read by the translation unit (ribosome and trna) in sequences of three (3). These sequences are referred to as codons. Codons code for amino acids. Some codons are start of stop codons meaning they initiate or terminate translation. Additionally, more that one codon could code for one amino acid.  






6 0
3 years ago
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