Protein and Nuclei Acids MCQ Questions & Answers

11

Homologous genes present in different organisms are called

A) Paralog B) Duplicate genes C) Ortholog D) Xenolog

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Answer & Solution

Answer: Option C

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12

The C-value paradox may be explained by the

A) More number of genes with more complexity B) Predominance of non-coding DNA C) Both A and B D) Non existence of coding regions

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Answer: Option B

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13

A virus whose RNA genome has a DNA intermediate as part of its replication cycle

A) Retro virus B) Cauliflower mosaic virus C) Vaccinia virus D) Adenovirus

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Answer & Solution

Answer: Option A

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14

In most bacterial mRNAs, the initiation codon is preceded by a special sequence called

A) 5'-Methylguanosine cap B) Poly A tail C) Ribosome binding site D) A and B both

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Answer & Solution

Answer: Option C

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15

Proteins transported to nucleus requires

A) Nuclear localization sequences B) N-terminal transit sequence C) Transit peptide D) All of the above

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Answer & Solution

Answer: Option A

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16

In E. coli, if there is no CCA at 3' end tRNA, it will be added by the enzyme

A) tRNA nucleotidyl transferase B) Transposase C) Nuclease D) All of the above

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Answer & Solution

Answer: Option A

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17

Which one of the following is not directly involved in the process known as translation?

A) Peptidyl transferase B) Aminoacyl-tRNA synthetases C) mRNA D) DNA

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Answer & Solution

Answer: Option D

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18

Which of the following statement about eukaryote RNA polymerases is correct?

A) RNA polymerase I (RNA Pol I) is located in the nucleolus and transcribes the 28S, 18S, 5.8S rRNA genes B) RNA polymerase II (RNA Pol II) is located in the nucleoplasm and transcribes protein coding genes to yield pre-mRNA and also the genes encoding small nuclear RNAs (snRNA) involved in RNA processing C) RNA polymerase III (RNA Pol III) is located in the nucleoplasm and transcribes genes for tRNA, 5S rRNA, and the 7S rRNA D) All of the above

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Answer & Solution

Answer: Option D

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19

The 5' upstream of a transcription start contains

A) Poly A tail B) Promoter C) Intron D) Exon

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Answer & Solution

Answer: Option B

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20

Open promoter complex comprises

A) RNA polymerase bound on cis acting element promoter B) local unwinding of DNA at active genic region C) Both A and B D) Proteins started to open up chromatin

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Answer & Solution

Answer: Option C

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Protein and Nuclei Acids MCQ Questions & Answers | Biotechnology