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MCQs

Total Questions : 241 | Page 18 of 25 pages
Question 171. A nonsense mutation introduced into the DNA sequence of a gene may
  1.    cause premature termination of the mRNA
  2.    shorten the length of the protein encoded by the gene
  3.    have no effect on the transcript or protein made
  4.    cause a shift in reading frame
 Discuss Question
Answer: Option B. -> shorten the length of the protein encoded by the gene
Answer: (b).shorten the length of the protein encoded by the gene
Question 172. Which of these mechanisms for thymine dimers repair lead to mutations?
  1.    Excision repair
  2.    Photoreactivation
  3.    SOS repair
  4.    Never leads to mutation
 Discuss Question
Answer: Option C. -> SOS repair
Answer: (c).SOS repair
Question 173. Which type of genomics studies the transcripts and proteins expressed by a genome?
  1.    Comparative genomics
  2.    Structural genomics
  3.    Proteo genomics
  4.    Functional genomics
 Discuss Question
Answer: Option D. -> Functional genomics
Answer: (d).Functional genomics
Question 174. Which of the following organisms has the smallest genome?
  1.    H. influenzae
  2.    M. genitalium
  3.    M. tuberculosis
  4.    None of these
 Discuss Question
Answer: Option B. -> M. genitalium
Answer: (b).M. genitalium
Question 175. Which of the following is the study of the molecular organization of genomes, their information content and the gene products they encode?
  1.    Genetics
  2.    Ergonomics
  3.    Genomics
  4.    Bioinformatics
 Discuss Question
Answer: Option C. -> Genomics
Answer: (c).Genomics
Question 176. Studies of similarities and differences among the genomes of multiple organisms is carried out in
  1.    comparative genomics
  2.    proteomics
  3.    functional genomics
  4.    structural genomics
 Discuss Question
Answer: Option A. -> comparative genomics
Answer: (a).comparative genomics
Question 177. The word, used for the small solid supports onto which are spotted hundreds of thousands of tiny drops of DNA that can be used to screen gene expression, is
  1.    southern blot
  2.    cloning library
  3.    DNA microarrays
  4.    northern blot
 Discuss Question
Answer: Option C. -> DNA microarrays
Answer: (c).DNA microarrays
Question 178. Within bacterial cells transfer of 'DNA' is carried out through
  1.    Insertion
  2.    Programmed rearrangements
  3.    Conjugations
  4.    Deletions
 Discuss Question
Answer: Option B. -> Programmed rearrangements
Answer: (b).Programmed rearrangements
Question 179. Transfer of 'DNA' from one cell to another, is known as
  1.    Transformation
  2.    Transduction
  3.    Conjugations
  4.    Mating
 Discuss Question
Answer: Option A. -> Transformation
Answer: (a).Transformation
Question 180. A wall less mycoplasma, having molecular weight, approximately
  1.    5 x 10^6
  2.    5 x 10^10
  3.    5 x 10^11
  4.    5 x 10^8
 Discuss Question
Answer: Option D. -> 5 x 10^8
Answer: (d).5 x 10^8

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