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MCQs

Total Questions : 107 | Page 4 of 11 pages
Question 31. The protein responsible for muscular dystrophy, dystrophin, is a __________ protein.
  1.    cross-linking
  2.    membrane-binding
  3.    tethering
  4.    severing
 Discuss Question
Answer: Option B. -> membrane-binding
Answer: (b).membrane-binding
Question 32. An organism in which cell motility takes place solely as a result of actin polymerization is ____________________
  1.    E. coli
  2.    Corynebacterium
  3.    Listeria monocytogenes
  4.    Clostridium botulinum
 Discuss Question
Answer: Option C. -> Listeria monocytogenes
Answer: (c).Listeria monocytogenes
Question 33. ActA, a surface protein activates the ______________
  1.    Arp2/3 complex
  2.    Sar1
  3.    Arf1
  4.    EcoR1
 Discuss Question
Answer: Option A. -> Arp2/3 complex
Answer: (a).Arp2/3 complex
Question 34. Lamellipodium is a protrusion of ________________
  1.    actin filaments
  2.    fibroblasts
  3.    myoblasts
  4.    neurons
 Discuss Question
Answer: Option A. -> actin filaments
Answer: (a).actin filaments
Question 35. The Wiskott-Aldrich syndrome is caused due the lack of functional ____________ protein.
  1.    ActA
  2.    Arf1
  3.    WASP
  4.    WAVE
 Discuss Question
Answer: Option C. -> WASP
Answer: (c).WASP
Question 36. Which of the following are the most extensible filaments?
  1.    intermediate filaments
  2.    cytochrome
  3.    microfilaments
  4.    microtubules
 Discuss Question
Answer: Option A. -> intermediate filaments
Answer: (a).intermediate filaments
Question 37. Where in a eukaryotic cell, can a microtubule NOT be found?
  1.    flagella
  2.    mitotic spindle
  3.    nucleus
  4.    cilia
 Discuss Question
Answer: Option C. -> nucleus
Answer: (c).nucleus
Question 38. Which technique has been used to study the dynamic nature of microtubules?
  1.    AFM
  2.    FRAP
  3.    GC-MS
  4.    ICP-MS
 Discuss Question
Answer: Option B. -> FRAP
Answer: (b).FRAP
Question 39. How many protofilaments are present in a single mammalian microtubule?
  1.    5
  2.    13
  3.    20
  4.    26
 Discuss Question
Answer: Option B. -> 13
Answer: (b).13
Question 40. Which type of macromolecules make up the wall of microtubules?
  1.    globular proteins
  2.    glycoproteins
  3.    deoxyribonucleic acids
  4.    carbohydrates
 Discuss Question
Answer: Option A. -> globular proteins
Answer: (a).globular proteins

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