12:09 LTE Done Expert Q8A 18. Introns A) Do not contain any functional sequences

Question

12:09 LTE Done Expert Q8A 18. Introns A) Do not contain any functional sequences B) Are only found in coding regions of protein-codng me C) Are removed after transcriptiorn D) Occur in almost every gene of the yeast genome 19 identify which of the following terms refers to th together in a protein A) primary structure B) Secondary structure C) Tertiary structure D) Quaternary structure 20. What would be the effect on the primary structure of he coded protein id a singe w deleted from messenger RNA transcript? A) No effect 8) A single amine acid residue is changed C) A complete change in amino acid sequence from the point of the deletion A premature termination of the chain at the point of mutation

Explanation / Answer

18) Introns: A & C are right option

Introns are non-coding sequences present in between coding regions, it intrupts protein coding sequence exons. Introns sometime affects gene expression but not code any proteins and so removed from mature m-RNA before translation.

19) secondary structure: Secondary structure makes protein come together and helps in folding form a base of tertiary folding

20) C option should be right option because if single base is deleated then reading frame become change and consequently all the amino acid become change

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