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MCQs

Total Questions : 282 | Page 10 of 29 pages
Question 91. Which of the following is correct in terms of determination of location of genetic traits?
  1.    Known protein coding sequences are too far apart to allow linkage determination for most new genes
  2.    Restriction sites allow DNAs to be digested
  3.    Protein-coding genes are always associated with a restriction pattern
  4.    None of the above
 Discuss Question
Answer: Option A. -> Known protein coding sequences are too far apart to allow linkage determination for most new genes
Answer: (a).Known protein coding sequences are too far apart to allow linkage determination for most new genes
Question 92. In gel electrophoresis, DNA molecules migrate from __________ to __________ ends of the gel.
  1.    negative ... positive
  2.    basic ... acidic
  3.    long ... short
  4.    positive to negative
 Discuss Question
Answer: Option A. -> negative ... positive
Answer: (a).negative ... positive
Question 93. Which of the following techniques can be used to determine the defective gene and for developing cancer?
  1.    Western blot
  2.    Southern blot
  3.    Northern blot
  4.    Eastern blot
 Discuss Question
Answer: Option B. -> Southern blot
Answer: (b).Southern blot
Question 94. Restriction enzymes
  1.    protect bacteria from viral infection
  2.    cut DNA in a staggered fashion
  3.    cut DNAs producing a blunt end
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 95. First discovered, Type II restriction endonuclease was
  1.    Hinf I
  2.    Eco K
  3.    Hind II
  4.    EcoRI
 Discuss Question
Answer: Option C. -> Hind II
Answer: (c).Hind II
Question 96. Translation begins
  1.    at the replication fork
  2.    on the lagging strand
  3.    at the start codon
  4.    in nucleus
 Discuss Question
Answer: Option C. -> at the start codon
Answer: (c).at the start codon
Question 97. The major function of RNA polymerase's sigma factor is
  1.    recognition of the translational stop sequence
  2.    recognition of the transcriptional start sequence
  3.    recognition of the transcriptional stop sequence
  4.    recognition of the translational start sequence
 Discuss Question
Answer: Option B. -> recognition of the transcriptional start sequence
Answer: (b).recognition of the transcriptional start sequence
Question 98. Transcription factors are
  1.    promoters
  2.    proteins which bind to DNA and regulate transcription
  3.    TATA boxes
  4.    CATT boxes
 Discuss Question
Answer: Option B. -> proteins which bind to DNA and regulate transcription
Answer: (b).proteins which bind to DNA and regulate transcription
Question 99. RNA is synthesized on a DNA template in a process called __________ , which utilizes the enzyme __________
  1.    translation, RNA polymerase
  2.    transcription, DNA polymerase
  3.    transcription, RNA polymerase
  4.    replication, DNA polymerase
 Discuss Question
Answer: Option C. -> transcription, RNA polymerase
Answer: (c).transcription, RNA polymerase
Question 100. Most transcripts of protein coding genes are cleaved
  1.    at the 3' end just after a poly adenylation signal
  2.    at the 3' end just before a poly adenylation signal
  3.    at the 5' end immediately after a poly adenylation signal
  4.    at the 5' end immediately before a poly adenylation signal
 Discuss Question
Answer: Option A. -> at the 3' end just after a poly adenylation signal
Answer: (a).at the 3' end just after a poly adenylation signal

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