NEET Biotechnology Questions – Paper 01, Total Questions: 25, Subject: Biology, Topic: Biotechnology, Type: MCQs (Multiple Choice Questions)
| Questions | Answers |
| 1. The term cistorn, muton and recon were introduced by (A) Watson and Crick (B) S. Benzer (C) Meselson (D) Morgan |
Answer: (B) |
| 2. Extranuclear genetic material is found in (A) Plastid and nucleus (B) Mitochondria and plastids (C) Nucleus and cytoplasm (D) Mitochondria and nucleus |
Answer: (B) |
| 3. The molecular formulae of deoxyribose sugar and ribose sugar respectively are (A) C5 H10 O4 and C5H10O6 (B) C5 H10 O4 and C5H10O5 (C) C5 H10 O5 and C5H10O4 (D) C5 H10 O5 and C6H10O4 |
Answer: (B) |
| 4. The nitrogen bases which pair with two hydrogen bonds are (A) Adenine and thymine (B) Adenine and Cytosine (C) Cytosine and guanine (D) Cytosine and adenine |
Answer: (A) |
| 5. DNA differs from RNA in (A) Presence of deoxyribose sugar (B) Presence of thymine base (C) Property of replication (D) All the above |
Answer: (D) |
| 6. DNA molecules makes a complete turn after every (A) 20 Å (B) 34 Å (B) 3.4 Å (D) 10 base pairs |
Answer: (D) |
| 7. The distance between two successive nitrogenous base pairs is (A) 34 Å (B) 36 Å (C) 20 Å (D) 3.4 Å |
Answer: (D) |
| 8. In nucleoside, nitrogen base is attached to pentose sugar at (A) Carbon – 1 of pentose sugar (B) Carbon – 2 of pentose sugar (C) Carbon – 4 of pentose sugar (D) Carbon – 5 of pentose sugar |
Answer: (A) |
| 9. If the strand of DNA has 35 nucleotide how many phosphodiester bonds would exist (A) 34 (B) 35 (C) 24 (D) 70 |
Answer: (A) |
| 10. In eukaryotic DNA replication, lagging strand is formed by (A) RNA fragments (B) Okazaki fragments (C) DNA fragments (D) Nucleotide fragments |
Answer: (B) |
| 11. The enzyme DNA polymerase can work only in (A) 3’ → 5’ direction (B) 5’ → 3’ direction (C) Both the direction (D) 5’ → 5’ direction |
Answer: (B) |
| 12. Enzyme required for removing RNA primer during DNA replication is (A) DNA primase (B) DNA ligase (C) DNA polymerase I (D) DNA polymerase III |
Answer: (C) |
| 13. During DNA replication, the reunion or recoiling of separated DNA strand is prevented by (A) Helix destabilizing protein (B) Single strnad binding protein (C) Rep protein (D) Both (A) and (B) |
Answer: (D) |
| 14. The enzyme that cuts the bonds of DNA molecule at the origin of replication is (A) Endonuclease (B) DNA polymerase (C) DNA gyrase (D) DNA ligase |
Answer: (A) |
| 15. Which of the following enzyme is required to release the tension imposed by uncoiling of strands? (A) Endonuclease (B) DNA ligase (C) DNA gyrase (D) DNA helicase |
Answer: (C) |
| 16. The cellular composition of m-RNA is (A) 5-10% (B) 3-5% (C) 10-20 % (D) 70-80% |
Answer: (B) |
| 17. Formation of mRNA from DNA is called (A) Transformation (B) Transduction (C) Traslation (D) Transcription |
Answer: (D) |
| 18. The ratio of purines and pyrimidines in mRNA is not 1:1 because the nitrogenous bases are (A) Unpaired (B) Paired (C) Paired only in loops (D) Paired in stems |
Answer: (A) |
| 19. The codons which may present at 3¢ end of mRNA (A) UAA (B) UAG (C) UGA (D) Any one of these |
Answer: (D) |
| 20. Which of the following is not tool of genetic engineering? (A) Vectors (B) Enzymes (C) Foreign DNA (D) GMO |
Answer: (D) |
| 21. In recombinant DNA technology a plasmid vector is cleaved by (A) Modified DNA ligase (B) A heated alkaline solution (C) The same enzyme that cleave the donor DNA (D) The different enzyme other than that cleave the donor DNA |
Answer: (C) |
| 22. The most common plasmid vector used in genetic engineering is (A) PBR 328 (B) PBR 322 (C) PBR 325 (D) PBR 330 |
Answer: (B) |
| 23. ‘Nif gene’ for nitrogen fixation is cereal crops like wheat, jowar etc. is introduced by cloning (A) Rhizobium meliloti (B) Bacillus thuringiensis (C) Rhizopus (D) Rhizophora |
Answer: (A) |
| 24. Eco RI is an (A) Ligase (B) Polymerase (C) Restriction enzyme (D) Gyrase |
Answer: (C) |
| 25. The transgenic plant flavr savr tomato carries an artificial gene for (A) Delay ripening process (B) Longer shell life (C) Added flavours (D) All of these |
Answer: (D) |