MCQ ON RNA class 12 for NEET | THE RNA class 12 | MCQ RNA with Answer | Check the below NCERT MCQ question for class 12 Biology chapter 06 based on the with Answers.
MCQ ON RNA class 12 for NEET
MCQ on RNA class 12 Biology with answers were prepared based on the latest pattern.We have provided class 12 Biology MCQs questions on RNA with Answers to help students understand the concept very well.
MCQ ON RNA is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM 2022-23, 2023-24
Introduction:
RNA was first genetic material. RNA used to act as a genetic material as well a catalyst. But RNA being a catalyst was reactive and hence unstable. In bacteria ,there are three major types of RNAs : mRNA, tRNA and rRNA .All three RNAs are synthesized a protein in a cell.
The mRNA provides the template , tRNA brings amino acids and read genetic code and rRNAs play structural and catalytic role during translation.
MCQ ON RNA class 12 for NEET
1. Pyramidine base present in RNA in place of thymine of DNA is
(a) uracil
(b) adenine
(c) cytosine
(d) guanine
Ans (a) uracil
2. RNA contains
(a) hexose
(b) ribose
(c) fructose
(d) glucose
Ans. (b) ribose
3. Triplet codon refers to sequence of three bases on
(a) mRNA
(b) tRNA
(c) rRNA
(d) all the above
Ans. (b) mRNA
4. The maximum formation of RNA occurs in
(a) cytoplasm
(b) nucleoplasm
(c) nucleolus
(d) ribosomes
Ans.(c) nucleolus
5.RNA that pick up specific amino acid from amino acid pool of cytoplas to carry it to ribosome during photosynthesis synthesis is
(a) tRNA
(b) mRNA
(c) rRNA
(d) gRNA
Ans.(a) tRNA
6. mRNA is polymer of
(a) ribonucleotides
(b) deoxyribonucleotides
(c) ribonucleosides
(d) deoxyribonucleosides
Ans.(a) ribonucleotides
7. tRNA recognises amino acyl synthetase enzyme by
(a) anticodon
(b) DHU looo
(c) AA-site
(d) all the above
Ans.(b) DHU loop
8.Amino acid binding site of tRNA js
(a) 5’end
(b) anticodon loop
(c) DHU loop
(d) -CCA 3’end
Ans.(d) CCA 3 ‘ end
9. Genetic code translates the language of
(a) amino acids into that of RNA
(b) RNA into that of protein
(c) Protein into that of DNA
(d) RNA into that of DNA
Ans. (b) RNA into that of protein
10. A sequence of 3 bases on t RNA which binds to mRNA codon is
(a) triplet
(b) nonsense codon
(c) anticodon
(d) termination codon
Ans. (c) anticodon
11. RNA code for DNA codon ATG will be
(a) ATG
(b) AUG
(c) UAC
(d) TAC
Ans.(c) UAC
12.The enzyme needed for production of DNA from RNA is
(a) RNA polymerase
(b) Reverse transcriptase
(c) RNA polymerase
(d) RNA ligase
Ans . (b) Revese transcriptase
13.Nongenetic RNA is of
(a) 2 types
(b) 3 types
(c) 4 types
(d) 5 types
Ans.(b) 3 types
15. Polyribosomes are formed when ribosomes are connected by
(a) rRNA
(b) mRNA
(c) tRNA
(d) all the above
Ans. (b) mRNA
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16. tRNA has functions of
(a) transcription
(b) adapter for attaching amino acids over mRNA template
(c) transcription information to mRNA
(d) none of the above
Ans.(b) Adapter for attaching amino acid over mRNA template.
17. Three dimensional shape of tRNA is
(a) L – shaped
(b) clover leaf like
(c) X- shaped
(d) Y- shaped
Ans.(a) L- shaped
18. Anticodon occurs in
(a) tRNA
(b) mRNA
(c) mtRNA
(d) rRNA
And.(a) tRNA
19. RNA polymerase 1 catalyses synthesis of
(a) rRNA
(b) tRNA
(c) mRNA
(d) none of the above
Ans. (a) rRNA
20.Type of RNA polymerase operates in eukaryotes are
(a) 3
(b) 1
(c) 2
(d) 4
Ans.(a) 3
21.The smallest RNA is
(a) mRNA
(b) tRNA
(c) rRNA
(d) None of the above
Ans. (b) tRNA
22. The most abundant RNS of cell is
(a) mRNA
(b) tRNA
(c) rRNA
(d) cataytic RNA
Ans.(c) rRNA
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