A gene that contains 36 nucleic acids in nucleic acid in the

A gene that contains 36 nucleic acids in nucleic acid in the introns, and 27 nucleic acids in the exons, will produce a polypeptide chain of how many amino acids? (No other post-transcriptional or post-translational processing occurs.) A. 12 B. 9 C. 21 D. 27 E. 63 After transcription in eukaryotes, A. The mRNA goes directly to translation. B. The mRNA undergoes processing but this does not affect the final protein product. C. The mRNA undergoes processing that often does affect the final protein product. D. The mRNA is transported directly to the endoplasmic reticulum. E. The mRNA is secreted out of the cell. Translation involves which of the following? A. Ribosomes B. tRNAs C. ATP D. A and B E. A and C

Solution

polypeptide chain will be of 27 amino acids, because there are 27 exons and only exons will encode for mature m-RNA and introns will be removed and that mature m-RNA is translated into the protein.

12) The answer will be C.In eukaryotes after transcription m-RNA undergoes processing like cleavage, addition of nucleotides and chemical modification after synthesis.Processing of eukaryotic pre m-RNA involves 5\' capping ,3\' cleavage/polyadenylation ,splicing and RNA editing before being transported to the cytoplasm where they are translated by ribosome.

13) answer is (D) because ribosomes are the site of protein synthesis after transcription and splicing m-RNA is transported to ribosome and tRNAs bring anticodon to the codons present on m-RNA and helps in the formation of polypeptide.