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MCQs

Total Questions : 193 | Page 10 of 20 pages
Question 91. Aldolases splits fructose 1,6 biphosphate into
  1.    glyceraldehyde 3- phosphate
  2.    glyceraldehyde 3- phosphate and dihydroxyacetone phosphate
  3.    dihydroxyacetone phosphate
  4.    none of the above
 Discuss Question
Answer: Option B. -> glyceraldehyde 3- phosphate and dihydroxyacetone phosphate
Answer: (b).glyceraldehyde 3- phosphate and dihydroxyacetone phosphate
Question 92. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration synthesis, if molecular formula for glucose is C6H,206?
  1.    C60H100O50
  2.    C60H120O60
  3.    C60H102O51
  4.    (C6H12O6)10
 Discuss Question
Answer: Option C. -> C60H102O51
Answer: (c).C60H102O51
Question 93. An intermediate which inhibits the activity of fructose 1,6 diphos-phatase would inhibit
  1.    glycolysis
  2.    pyrolysis
  3.    gluconeogenesis
  4.    none of these
 Discuss Question
Answer: Option C. -> gluconeogenesis
Answer: (c).gluconeogenesis
Question 94. Glycolysis reactions take place in
  1.    cytoplasm
  2.    cell membrane
  3.    cell wall
  4.    plasmids
 Discuss Question
Answer: Option A. -> cytoplasm
Answer: (a).cytoplasm
Question 95. In the Glycolysis reaction, for each glucose conversion how many ATP's are produced?
  1.    4
  2.    2
  3.    1
  4.    3
 Discuss Question
Answer: Option B. -> 2
Answer: (b).2
Question 96. How many types of enzymatic regulation mechanism occurs in the cells?
  1.    2
  2.    3
  3.    4
  4.    5
 Discuss Question
Answer: Option D. -> 5
Answer: (d).5
Question 97. The rate determining step of Michaelis-Menten kinetics is __________
  1.    The complex dissociation step to produce products
  2.    The complex formation step
  3.    The product formation step
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> The complex dissociation step to produce products
Answer: (a).The complex dissociation step to produce products
Question 98. Which of the following is true about Michaelis-Menten kinetics?
  1.    Kₘ, the Michaelis constant, is defined as that concentration of substrate at which enzyme is working at maximum velocity
  2.    It describes single substrate enzymes
  3.    Kₘ, the Michaelis constant is defined as the dissociation constant of the enzyme-substrate complex
  4.    It assumes covalent binding occurs between enzyme and substrate
 Discuss Question
Answer: Option B. -> It describes single substrate enzymes
Answer: (b).It describes single substrate enzymes
Question 99. When the velocity of enzyme activity is plotted against substrate concentration, which of the following is obtained?
  1.    Hyperbolic curve
  2.    Parabola
  3.    Straight line with positive slope
  4.    Straight line with negative slope
 Discuss Question
Answer: Option A. -> Hyperbolic curve
Answer: (a).Hyperbolic curve
Question 100. Which is the enzyme that acts as a regulatory enzyme in a four-step metabolic pathway?
  1.    First enzyme
  2.    Fourth enzyme
  3.    Second enzyme
  4.    Third enzyme
 Discuss Question
Answer: Option A. -> First enzyme
Answer: (a).First enzyme

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