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Assertion (A): During elongation of a po...

Assertion (A): During elongation of a polypeptide chain, the amino acid-tRNA complexes, sequentially bind to the A-site of the ribosome.
Reason (R): This binding prepared the complex for termination of translation.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true

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Assertion (A): The process of translation or protein synthesis 'terminates when the A-site of ribosome encounters a termination codon. Reason (R): A release factor liinds to the stop codon and translation is terminated.

Assertion :- UGG is a chain termination codon. Reason : It does not code any amino acid.

Amino acid binding site of tRNA has

Amino acid binding site of tRNA is

The following features occur during protein synthesis: (a) Movement of mRNA from the nucleus into the cytoplasm, where it binds to the ribosomes (b) Formation of tRNA-amino acid complex (c) Transcription of specific segments of DNA into mRNA molecules in the nucleus (d) Binding of N-terminal amino acid, methionine tRNA to the 'P' site of the ribosome. The tRNA anticodon 'pairs with AUG on mRNA' (e) Formation of peptide bond between first and second amino acids at the A site (f) Release of the complete polypeptide chain from mRNA and the ribosomes (g) Migration of dipeptide to form a tripeptide and then a polypeptide The correct order of events is:

Assertion (A) : Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. Reason (R ) : m-RNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

Assertion (A): Some codons act as terminating or stop codons. Reason ( R): 3 codons do not code for any amino acids.

EDUCART PUBLICATION-SAMPLE PAPER (SELF-ASSESSMENT )-9-MULTIPLE CHOICE QUESTIONS
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  3. Assertion (A): During elongation of a polypeptide chain, the amino aci...

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  6. Which among these are steps token by the government to check populatio...

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  7. Meiotic division during oogenesis is termed as an unequal division bec...

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  8. Which among there is not a component of a nucleotide?

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  9. Primase is the enzyme responsible for initiation of DNA synthesis. Whi...

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  10. tRNA, SsrRNA, snRNAs are transcribed by:

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  11. Whose model of DNA was provided a viable confirmation by Messelson and...

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  12. X = ………………….. refers to the first menstruation while Y = …………... ref...

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  13. Pleiotropy is the effect of X = gene(s) on Y = ……………….. phenotypic exp...

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  14. Which among these are coded by only one codon ?

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  15. Which among these are roles played by ribosomes:

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  16. Capping II involves the addition of ................ . to the 5'-end o...

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  17. The only spot in a seed where the integuments are absent around ovule ...

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