Gene its Nature Expression and Regulation Objective Type Questions and Answers | Gene its Nature Expression and Regulation Quiz

Questions

21 Segments ofmRNA removed during splicing are

A Integrator visions

B Exons

C Introns

D Promoter regions

View Answer

Answer: Introns

22 The essential components of Eukaryotic cistron are

A Exons

B Operator and regulator regions

C Introns

D Operons

View Answer

Answer: Exons

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23 External supply of tryptophan in escherichia coli brings about

A Switching on of Lac Operon

B Switching on of tryptophan Operon

C Switching off of tryptophan Operon

D Switching off of Lac Operon

View Answer

Answer: Switching off of tryptophan Operon

24 Corepressorbinds with

A Aporepressor

B Regulator gene

C Promoter gene

D Operator gene

View Answer

Answer: Aporepressor

25 Tryptophan Operon of escherichia coli is

A Unregulated

B Repressible

C Monocistronic

D Inducible

View Answer

Answer: Unregulated

26 Part of Operon producing repressor is known as

A Regulator gene

B Promoter gene

C Repressor gene

D Operator gene

View Answer

Answer: Regulator gene

27 Regulated unit of genetic material is termed as

A Operator gene

B Okazaki segment

C Operon

D Regulator gene

View Answer

Answer: Operon

28 Components of an Operon are

A Regulator, promoter, operator and structural genes

B Regulator, promoter and structural genes

C Operator, promoter and regulator genes

D Operator, regulator and structural genes

View Answer

Answer: Regulator, promoter, operator and structural genes

29 Agene that takes part in the synthesis of polypeptide is

A Structural gene

B Promoter gene

C Regulator gene

D Operator gene

View Answer

Answer: Structural gene

30 The technique of detecting and screening of nutritional Mutants in neurospora crassa was developed by

A Beadle and Tatum

B Bateson and punnett

C Mendel

D Morgan

View Answer

Answer: Beadle and Tatum

31 Beadle and Tatum produced mutant strain of neurospora by

A Gamma rays

B Beta rays

C X rays

D UV rays

View Answer

Answer: X rays

32 The terms triplet code and genetic code where coined by

A Gamow

B Conrat

C Watson and Crick

D Nirenberg

View Answer

Answer: Gamow

33 A mutant strain of neurospora which fails to grow on a minimal medium unless supplemented with a nutrient is called

A Prototroph

B Auxotroph

C Heterotrophs

D Autotrophs

View Answer

Answer: Auxotroph

34 One gene one enzyme hypothesis was proposed by

A Beadle and Tatum

B Bridges

C Khurana and nirenberg

D Bateson and punnet

View Answer

Answer: Beadle and Tatum

35 Genetic information is carried out by long chain molecule made up of

A Nucleotides

B Histone proteins

C Amino acids

D Enzymes

View Answer

Answer: Nucleotides

36 For their contribution in biochemical Genetics the scientist who received Nobel Prize in 1958 were

A Zinder and Morgan

B Beadle and lederberg

C Beadle and Tatum

D Leaderberg and Zinder

View Answer

Answer: Beadle and Tatum

37 Blender experiment to prove DNA as genetic material was performed by

A Rosalind Franklin

B Watson and Crick

C Hershey and chase

D Meselson and stahl

View Answer

Answer: Hershey and chase

38 In polypeptide synthesis amino acids are brought over ribosomes mRNA Complex by

A tRNA

B DNA

C rRNA

D Nucleotides

View Answer

Answer: tRNA

39 Code transfer for synthesis of polypeptide involves

A DNA,mRNA,tRNA and amino acids

B tRNA,DNA,nRNA and rRNA

C DNA, tRNA, or RNA andmRNA

D mRNA,tRNA,rRNA and DNA

View Answer

Answer: DNA,mRNA,tRNA and amino acids

40 DNA acts as a template for synthesis of

A RNA

B DNA

C Both DNA and RNA

D Protein

View Answer

Answer: Both DNA and RNA

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