al More than one codon can code for the same amino acid bj A single codon can sp

Question

al More than one codon can code for the same amino acid bj A single codon can specify more than one amino acid None of the above 19. The Genetic Code is said to be Redundlant because required cl A codon consists of three nucleotide bases-but only two are d) At the above ej None of the above 35. Which is NOT true c) it is use d) it is u of the following statements about the Genetic Code is NOT true? a) Genetic information i b) The genetic code is a triplet code s encoded in the sequence of nucleotide bases c) Multiple codons may encode the same amino d) Certain codons do not code for ej None (All of the above statements are true). an amino acid, but instead mean "Stop." 21. Which of the following is not useful in producing recombinant DNA? a) Restriction enzymes b) DNA ligase c) RNA polymerase d) Plasmid ej None (They are all used to make recombinant DNA) True or False Fill in (a) for True and (b) for False) 22. The primary structure of a protein is directed by the genetic sequence encoding that protein. are enzymes that cut DNA at specific double-stranded sequences 23. Restriction endonucleases 24. In PCR, heat is used to denature (separate) DNA strands 25. Tog polymerase is used in PCR because it is stable at high temperatures. 26. A bacteriophage, a kind of virus that infects bacteria, can be used as a cloning vector 27 DNA ligase is an enzyme that generates "sticky ends." 28. Enzymes work by increasing activation energy (the energy required to start a chemical reaction). 29 Eukaryotic genes can be expressed in bacteria using an appropriate promoter 30. Human insulin is an example of a product produced by molecular cloning 31. Selective breeding leading to the domestication of animals is an example of ancient bioengineering. 32. Biotechnology began with the discovery of the double helical structure of DNA. Multiple Choice 33. A transgenic animal a) is a reproductive clone is produced by selective breeding d) b) contains one or more genes from another species c) is produced by Somatic Cell Nuclear Transfer e) None of the above 34. Gene therapy is best described as a) Replacement of a missing gene product (protein) b) Replacement of a defective gene c) Introduction of a foreign gene (e.g. from another species)

Explanation / Answer

Answere :

Question 19 : The option (a) is correct i.e. The genetic code is said to be 'Redundant' because more than one codon can code for the same amino acid.

Question 20 : The option (e) is correct i.e. all above statements are true.

Question 21 : The option (c) is correct i.e. RNA polymerase is not useful in producing recombinant DNA.

Question 22 : The statement is true i.e. The primary structure of protein is depend upon the genetic sequence encoding that protein.

Question 23 : The statement is true i.e. Restriction endonuclease are enzyme that cut DNA at specific double stranded sequence.

Question 24 : The statement is true.

Question 25 : The statement is true.

Question 26 : The statement is true.

Question 27 : The statement is false i.e. DNA ligase join DNA molecules together by synthesizing phosphodiester bonds between nucleotides.

Question 28 : The statement is false i.e. enzyme increase rate of reaction by decreasing activation energy.

Question 29 : The statement is false i.e. The eukaryotic gene can be expressed in bacteria through ori of gene.

Question 30 : The statement is true.

Question 31 : The statement is false.

Question 32 : The statement is false.

Question 33 : The option (b) is correct i.e.a transgenic animal contain one or more gene from another species.

Question 34 : The option (b) is correct i.e. gene therapy is best described as replacement of defective gene.

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