MCQ Questions Molecular Basis of Inheritance Class 12 Biology Chapter 6 with Answers
NCERT Biology Class 12th Bio Ch.6 Molecular Basis of Inheritance MCQ Practice Questions for NEET | Class 11
Prepare these important MCQ Questions of Biology Class 12 Molecular Basis of Inheritance Chapter 6, Latest questions to expected to come in NEET | School Exams.
1. For terminating process of translation release factor binds toโ
1. Ribosome subunit
2. Stop codon
3. UTR at downstream
4. tRNA
2. Choose the incorrect statement.โ
1. Alec Jeffrey used satellite DNA as probe.
2. ฮฒ gal stands for beta-galactosidase.
3. DNA from single cell is not enough to perform fingerprinting analysis.
4. Satellite DNA could be classified on basis of different base composition.
3. Choose the incorrect match with respect to codon and amino acid coded by them.โ
1. UUC โ Phe
2. AAU โ Asp
3. GAG โ Glu
4. UGU โ Cys
4. How different proteins does the ribosome consists of?โ
1. 80
2. 40
3. 25
4. 400
5. Process of translation begins whenโ
1. Charging of tRNA takes place in presence of ATP.
2. Large subunit of ribosome encounters mRNA
3. Small subunit of ribosome encounters mRNA
4. tRNA binds UAC codon.
6. Amino acid found attached to tRNA having anticodon UCA isโ
1. Tyrosine at 5โฒ end.
2. Serine at 3โฒ end.
3. Serine at 5โฒ end.
4. Tyrosine at 3โฒ end.
7. The actual structure of tRNA looks like:โ
1. Clover leaf
2. Bean shaped
3. Inverted L
4. Double helix
8. Choose the incorrect option:โ
1. Lac operon is under both positive and negative regulation.
2. Control of rate of translation is predominant site for control of gene expression in prokaryotes.
3. In most cases the sequences of operator bind a repressor protein.
4. In presence of lactose or allolactose, repressor is inactivated.
9. There are i sites in ii for amino acids to bind and be close enough for bond formation. i and ii areโ
1. 3, large subunit
2. 2, large subunit
3. 2, small subunit
4. 3, small subunit
10. All the following amino acids are coded by six different codons exceptโ
1. Arginine
2. Lysine
3. Leucine
4. Serine
11. Chemical method developed by which scientist was instrumental in synthesis of RNA molecules with defined combination of bases?โ
1. Jacob Monod
2. M.Nirenberg
3. G.Gamow
4. HG Khorana
12. We face difficulty in predicting the codon sequence from the given amino acid sequence because of which property of genetic codeโ
1. Universal
2. Non ambiguous
3. Degeneracy
4. Comaless natture
13. Whic of the following,finally the helped the genetic code code to deciphered?โ
1. Severa ochoa
2. Cell free system for protein sythesis
3. Chemical method to for synthesis of RNA with defined combination of bases.
4. Lac operon elucidation
14. Vectors used in human genome project includeโ
1. BAC
2. YAC
3. Ti plasmid
4. Both 1 and 2
15. Choose the incorrect statement.โ
1. Y chromosome has 231 genes.
2. The two alleles of a chromosome contain different copy numbers of VNTR.
3. DNA from every tissue from and individual show same degree of polymorphism.
4. Satellite DNA on density gradient centrifugation forms major peak.
16. QB bacteriophage has genetic material asโ
1. RNA
2. ss DNA
3. ds DNA
4. Both RNA and DNA
17. ฮฆX174 phage has<โ
1. 5386 base pairs
2. 5386 nucleotides
3. 48502 bp
4. about 4 billion bp
18. Unequivocal proof of DNA comes from study onโ
1. Bacteria
2. Neurospora
3. Humans
4. Bacterial virus
19. State True or False:โ
A. The chains in B-DNA have parallel polarity.
B. RNA has ability to duplicate direct their duplication.
1. T, F
2. F, T
3. T, T
4. F, F
20. Blending is performed in Hershey chase experiment toโ
1.Seperate virus particles from bacteria
2. Remove viral coats from bacteria
3. Infect the bactria with virus
4. Making DNA and protein radioactive