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MCQs

Total Questions : 463 | Page 46 of 47 pages
Question 451. . Which of the following virus is enveloped?
  1.    Adeno
  2.    Herpes
  3.    Polio
  4.    None of these
 Discuss Question
Answer: Option B. -> Herpes
Question 452. . Which of the following viruses can rescue adenovirus in simian cells?
  1.    Rabies
  2.    Vaccinia
  3.    Simian virus 40
  4.    Cytomegalovirus
 Discuss Question
Answer: Option C. -> Simian virus 40
Question 453. . The phage components begin to assemble into mature phages only after the synthesis of
  1.    structural protein
  2.    nucleic acid
  3.    Both (a) and (b)
  4.    amino acids
 Discuss Question
Answer: Option C. -> Both (a) and (b)
Question 454. . Which of the following bacteriophage is said to have banal symmetry?
  1.    T2
  2.    T4
  3.    T6
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 455. .  Viruses can be purified based on their size and density by using
  1.    gradient centrifugation
  2.    differential centrifugation
  3.    precipitation
  4.    none of these
 Discuss Question
Answer: Option A. -> gradient centrifugation
Question 456. . Which of the following are obligate intracellular parasites?
  1.    Chlamydia
  2.    Viruses
  3.    Rickettsia
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 457. . Which of the following statements is correct?
  1.    Up to 10% of human tumours have a viral risk factor
  2.    Up to 40% of human tumours have a viral risk factor
  3.    Up to 30% of human tumours have a viral risk factor
  4.    Up to 20% of human tumours have a viral risk factor
 Discuss Question
Answer: Option D. -> Up to 20% of human tumours have a viral risk factor
Question 458. . The extracellular phage number increases until a constant titer at the end of the multiplication cycle. This time interval is termed as
  1.    eclipse period
  2.    rise period
  3.    latent period
  4.    burst size
 Discuss Question
Answer: Option B. -> rise period
Question 459. . Which of the following bacteriophage is said to have banal symmetry?
  1.    T2
  2.    T4
  3.    T6
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 460. . Which of the following are obligate intracellular parasites?
  1.    Chlamydia
  2.    Viruses
  3.    Rickettsia
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these

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