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MCQs

Total Questions : 67 | Page 1 of 7 pages
Question 1. How many types of replication models were considered before the semiconservative nature of DNA replication was confirmed?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 2. The bacterial oriC is the __________________
  1.    specific sequence
  2.    transcription factor
  3.    enzyme
  4.    polypeptide
 Discuss Question
Answer: Option A. -> specific sequence
Answer: (a).specific sequence
Question 3. Temperature-sensitive mutants can not replicate their chromosomes at non-permissive temperatures.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 4. Movement of the replication fork generates ________________ in the unreplicated portion of DNA.
  1.    positive supercoils
  2.    negative supercoils
  3.    untranslated regions
  4.    amino acid substitutions
 Discuss Question
Answer: Option A. -> positive supercoils
Answer: (a).positive supercoils
Question 5. Which isotopes were used by the researchers who first confirmed the semiconservative nature of DNA replication?
  1.    Nitrogen
  2.    Carbon
  3.    Oxygen
  4.    Sulfur
 Discuss Question
Answer: Option A. -> Nitrogen
Answer: (a).Nitrogen
Question 6. Vertebrate eggs are typically fertilized before ___________________ is complete.
  1.    mitosis
  2.    meiosis
  3.    translation
  4.    transcription
 Discuss Question
Answer: Option B. -> meiosis
Answer: (b).meiosis
Question 7. The sporic or intermediate meiosis is unrelated to gamete formation.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 8. Zygotic meiosis only occurs in _______________________
  1.    fungi
  2.    monera
  3.    vertebrates
  4.    mammals
 Discuss Question
Answer: Option A. -> fungi
Answer: (a).fungi
Question 9. Chiasmata are ____ shaped structures.
  1.    X
  2.    U
  3.    V
  4.    Z
 Discuss Question
Answer: Option A. -> X
Answer: (a).X
Question 10. Leptotene and zygotene are the stages that occur during _____________ of meiosis.
  1.    anaphase
  2.    prophase II
  3.    metaphase II
  4.    telophase
 Discuss Question
Answer: Option B. -> prophase II
Answer: (b).prophase II

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