13-19 help eneracy results because there are more codons than A. Decodable amino
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13-19 help
eneracy results because there are more codons than A. Decodable amino acids B. Encodable amino acids C. Encodable DNA D. Encodable RNA 14. The anticodon CAU has a code of and DNA sequence of A. GTA CTT B. GUT; CTA C. GUA: CTA D. GUA: CAT 15. Altemative splicing is the process in which A. multiple proteins to create one gene B. one gene to make multiple proteins C. multiple proteins to multiple genes D. one mRNA to make multiple proteins 16. A cell has a problem making rRNA and assembling ribosomes. One of the following can be expected from the observation A. Mitochondria are not able to produce ATP B. Golgi complex fails to make vesicles C. Endoplasmic reticulum fails to produce polyribosomes D. Nucleolus is damaged 17. rRNA molecules present in eukaryotic ribosomes are A. 16S, 28S, 5S and 5.8s B. 18S, 28S, 23S and 5S C. 5S, 5.8S, 18S and 28S D. 5S, 5.8S, 16S and 28S 18. The most important post-transcriptional modification of tRNA is A. Addition of 5' CAP B. Addition of 3' tail C. Addition of methyl group to 2'-OH group D. Addition of 3'-CCA 19. Provirus phase occurs when A. Virus enters the host and waits for replication B. Virus waits to enter the host after adsorption C. Virus incorporates into the host genome and stays latent D. None of the aboveExplanation / Answer
Answer=
13] Degeneracy results because there are more codons than
B]Encodable amino acids
explaination- out of 64 codons,61 represent amino acids and 3 are stop signals.Although each codon is specific for only one amino acid ,the genetic code is described by as degenerate,or redundant ,because a single amino acid may be coded by more than one codon.
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14] The anticodon CAU has a code of GUA and DNA sequence of CAT
D] GUA;CAT
Explaination- The anticodon in tRNA has a base pairing with the codons in mRNA .therefore if anticodon in tRNA CAU codes for GUA in mRNA .and the sequence of DNA is base pair with mRNA.
therefore mRNA has a sequence GUA it means that the DNA must have sequence of CAT.
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15]Alternating splicing is the process in which
B] single gene to make multiple proteins
explaination= alternative splicing or differential splicing is a regulated process during gene expression that results in a single gene coding for multiple proteins.
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16] If a cell has problem making rRNA and assembling ribosomes then
D]Nucleolus is damaged
explaination- If a cell has problem making rRNA and assembling ribosomes then ,the Nucleolus is damaged ,because ribosomal RNA are synthesized in a specialized region of cell nucleus called as nucleolus.it contains the genes that encode rRNA.
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