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In which direction does a polypeptide ch...

In which direction does a polypeptide chain being translated from m-RNA on a ribosome grow ?

A

From N terminus to C terminus

B

From C terminus to N terminus

C

It depends on the RNA being synthesized

D

It depends on the protein being synthesized

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The correct Answer is:
A
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The genetic instructions for forming a polypeptide chain are carried to the ribosomes by the

Following are the stages in the cellular synthesis of a protein. I. Movement of mRNA from the nucleus to cytoplasm. II. Linking of adjacent amino acid molecules. III. Transcription of mRNA from a DNA template. IV. Formation of the polypeptide chain. V. Attachment of the mRNA strand to a ribosome. In which order do these stages take place?

What is the amino acid sequence in the polypeptide segment translated from mRNA strand with base sequence of UCU-UGG-UGC-UGU-GGU?

Gene which is responsible for the synthesis of a polypeptide chain is called :-

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:

In which direction m-RNA is synthesized on DNA template ?

The hydrolytic step leading to the release of a polypeptide chain from a ribosome is catalysed by :

In a polypeptide chain amino acids are linked togetehr by which bond?

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.

GRB PUBLICATION-TRANSCRIPTION AND TRANSLATION-TRANSLATION
  1. Activation of an amino acid during protein synthesis requires a partic...

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  2. Which of the following step of translation does not consume a high ene...

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  3. In which direction does a polypeptide chain being translated from m-RN...

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  4. The hydrolytic step leading to the release of a polypeptide chain from...

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  5. Which one of the following is catalysed by the presence of enzyme pept...

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  6. The enzyme that catalyses peptide bonding is located in :

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  7. An aminoacyl synthetase is responsible for :

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  8. During protein synthesis anticodon of t-RNA binds with :

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  9. hn-RNA is :

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  10. Which of these is incorrect for translation ?

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  11. Protein synthesis differs from photosynthesis in :

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  12. Match the following in column I with column II and choose the correct ...

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  13. A potein inhibitor of protein synthesis that acts as an analogue of am...

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  14. Antibiiotic inhibiting translating in eukaryotes is :

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  15. Which antibiotic inhibits interaction between t-RNA and m-RNA during b...

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  16. Wobble hypothesis was proposed by :

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  17. In protein synthesis, adapter t-RNA attaches amino acid at its :

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  18. Some of the inhibitors of bacterial protein synthesis and their effect...

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  19. Which one of the following pair of codons is correctly mathed with fu...

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  20. The sequence of events mentioned below are symbolized by alphabets. Ch...

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