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MCQs

Total Questions : 107 | Page 2 of 11 pages
Question 11. After incorporation into growing actin filaments, the associated ATP is _____________
  1.    degraded
  2.    lysed
  3.    hydrolyzed
  4.    esterified
 Discuss Question
Answer: Option C. -> hydrolyzed
Answer: (c).hydrolyzed
Question 12. The phenomenon of “treadmilling” is observed in microfilaments under the __________ state.
  1.    steady
  2.    isotonic
  3.    hypertonic
  4.    thermodynamically favorable
 Discuss Question
Answer: Option A. -> steady
Answer: (a).steady
Question 13. The drug cytochalasin blocks the _____________Latrunculin blocks the ____________
  1.    ATPplus-end of microfilaments
  2.    Microfilamentsminus-end of microfilaments
  3.    Plus-end of microfilamentsactin monomers
  4.    Minus-end of microfilamentsactin filaments
 Discuss Question
Answer: Option C. -> Plus-end of microfilamentsactin monomers
Answer: (c).Plus-end of microfilamentsactin monomers
Question 14. The drug cytochalasin blocks the _____________
  1.    ATP
  2.    Microfilaments
  3.    Plus-end of microfilaments
  4.    Minus-end of microfilaments
 Discuss Question
Answer: Option C. -> Plus-end of microfilaments
Answer: (c).Plus-end of microfilaments
Question 15. The faster growing end of the microfilament is the plus-end.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 16. Melanosomes are transferred into the developing hair by myosin ____
  1.    II
  2.    III
  3.    IV
  4.    V
 Discuss Question
Answer: Option D. -> V
Answer: (d).V
Question 17. Myosin I was discovered in the year _________
  1.    1963
  2.    1973
  3.    1983
  4.    1993
 Discuss Question
Answer: Option B. -> 1973
Answer: (b).1973
Question 18. The striated appearance of muscle fibers is due to _______________
  1.    nucleus
  2.    sacromeres
  3.    sarcoma
  4.    myoblasts
 Discuss Question
Answer: Option B. -> sacromeres
Answer: (b).sacromeres
Question 19. Muscle cells are ___________
  1.    irregularly shaped
  2.    cylindrically shaped
  3.    extremely fragile
  4.    extremely labile
 Discuss Question
Answer: Option B. -> cylindrically shaped
Answer: (b).cylindrically shaped
Question 20. Muscle cells are formed from the fusion of ___________
  1.    myoblasts
  2.    fibroblasts
  3.    mast cells
  4.    neurons
 Discuss Question
Answer: Option A. -> myoblasts
Answer: (a).myoblasts

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