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MCQs

Total Questions : 178 | Page 15 of 18 pages
Question 141. Enzymes are capable of recognizing and reacting with a special chemical substance called
  1.    activator
  2.    substrate
  3.    co-factor
  4.    co-enzyme
 Discuss Question
Answer: Option B. -> substrate
Answer: (b).substrate
Question 142. Enzymes which are helpful in cellular respiration is found in
  1.    Golgi complex
  2.    chloroplast
  3.    mitochondria
  4.    RNA
 Discuss Question
Answer: Option C. -> mitochondria
Answer: (c).mitochondria
Question 143. Inhibitors blocking active site by making covalent bonds are specifically known as
  1.    reversible inhibitors
  2.    irreversible inhibitor
  3.    competitive inhibitors
  4.    non-competitive inhibitors
 Discuss Question
Answer: Option B. -> irreversible inhibitor
Answer: (b).irreversible inhibitor
Question 144. Optimum Ph for Chymotrypsin is
  1.    8
  2.    7
  3.    7--8
  4.    7--9
 Discuss Question
Answer: Option C. -> 7--8
Answer: (c).7--8
Question 145. Argument about enzyme, that they induces change in its structure when a substrate combines with enzyme was highlighted in
  1.    Lock and Key model
  2.    Induce Fit model
  3.    Conceptual model
  4.    Both a and b
 Discuss Question
Answer: Option B. -> Induce Fit model
Answer: (b).Induce Fit model
Question 146. The complex that forms when a substrate binds to enzyme is called
  1.    enzyme-substrate complex
  2.    enzyme complex
  3.    substrate complex
  4.    structural complex
 Discuss Question
Answer: Option A. -> enzyme-substrate complex
Answer: (a).enzyme-substrate complex
Question 147. In enzymatic mechanism the substrate bind to enzyme active site to produce
  1.    reactant
  2.    enzymes
  3.    products
  4.    ES Complex
 Discuss Question
Answer: Option C. -> products
Answer: (c).products
Question 148. HaeIII and AluI are restriction enzymes that cut straight across the double helix producing
  1.    sticky ends
  2.    blunt ends
  3.    Codons
  4.    Anticodons
 Discuss Question
Answer: Option B. -> blunt ends
Answer: (b).blunt ends
Question 149. The substrate concentration that produces exactly half of the maximum reaction rate can be described by
  1.    Michaelis equation
  2.    Menten equation
  3.    Bernoulli equation
  4.    Michaelis-Menten equation
 Discuss Question
Answer: Option D. -> Michaelis-Menten equation
Answer: (d).Michaelis-Menten equation
Question 150. Number of substrate molecules converted into product by one molecule of enzyme active site per unit time is called
  1.    turnover number
  2.    substrate number
  3.    reaction number
  4.    ES Complex
 Discuss Question
Answer: Option A. -> turnover number
Answer: (a).turnover number

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