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3 years ago

Give an overview of the process depicted in the diagram

Biology

1 answer:

Korolek [52]3 years ago

3 0

This is an overview of translation process.

Translation is the process in protein synthesis in which the genetic information encoded in mRNA is translated into sequence of amino acid in polypeptide chain.

Ribosomes bind to mRNA in the cytoplasm and move along the molecule in a 5 prime to 3 prime directon until it reaches a start codon i.e AUG. Anticodons on tRNA molecules align opposite appropriate codons according to complementary base pairing (e.g. AUG = UAC). Each tRNA molecule carries a specific amino acid (according to the genetic code) . Ribosomes catalyse the formation of peptide bonds between adjacent amino acids (via condensation reactions) . The ribosome moves along the mRNA molecule synthesising a polypeptide chain until it reaches a stop codon . At this point translation ceases and the polypeptide chain is released

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Options for the question are not given. They are as follows:

a. arg or lys

b. ala

c. thr

d. leu or ser

e. Only termination codons

Answer:

d. leu or ser

Explanation:

Four codons code for proline amino acid. These are CCT, CCC, CCA, and CCG. Hydroxylamine causes C to change into T or G to change into A.

If first position is changed in each codon:

CCT = TCT (UCU)

CCC = TCC (UCC)

CCA = TCA (UCA)

CCG = TCG (UCG)

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