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MCQs

Total Questions : 193 | Page 18 of 20 pages
Question 171. Which of the following is true about the structure of hexokinase?
  1.    U-shaped
  2.    T-shaped
  3.    E-shaped
  4.    G-shaped
 Discuss Question
Answer: Option A. -> U-shaped
Answer: (a).U-shaped
Question 172. Which of the following is true?
  1.    Xylose is stereo chemically similar to glucose but one carbon shorter
  2.    Xylose binds to hexokinase in a position where it can be phosphorylated
  3.    Addition of xylose increases the rate of ATP hydrolysis
  4.    The binding of xylose is sufficient to induce a change in hexokinase to its active conformation
 Discuss Question
Answer: Option B. -> Xylose binds to hexokinase in a position where it can be phosphorylated
Answer: (b).Xylose binds to hexokinase in a position where it can be phosphorylated
Question 173. Which of the following is false about chymotrypsin?
  1.    Hydrolytic cleavage of a peptide bond by chymotrypsin has two phases
  2.    It is activated in the presence of trypsin
  3.    It is synthesized in the thyroid gland
  4.    Polypeptide chains in chymotrypsin are linked by S-S bonds
 Discuss Question
Answer: Option C. -> It is synthesized in the thyroid gland
Answer: (c).It is synthesized in the thyroid gland
Question 174. Which of the following catalyzes the reversible reaction of β-D-Glucose to glucose 6-phosphate?
  1.    Chymotrypsin
  2.    Hexokinase
  3.    Enolase
  4.    Trypsin
 Discuss Question
Answer: Option B. -> Hexokinase
Answer: (b).Hexokinase
Question 175. Which of the following catalyzes the reversible degradation of 2-phosphoglycerate to phosphoenolpyruvate?
  1.    Chymotrypsin
  2.    Hexokinase
  3.    Enolase
  4.    Trypsin
 Discuss Question
Answer: Option C. -> Enolase
Answer: (c).Enolase
Question 176. Which of the following is an analogous to starch?
  1.    Cellulose
  2.    Glycogen
  3.    Sucrose
  4.    Chitin
 Discuss Question
Answer: Option B. -> Glycogen
Answer: (b).Glycogen
Question 177. Which of the following statements is false about proteoglycans?
  1.    They hold less amount of water
  2.    Chondroitin sulfate is a proteoglycan
  3.    They possess charge
  4.    They are made of amino acids and sugars
 Discuss Question
Answer: Option A. -> They hold less amount of water
Answer: (a).They hold less amount of water
Question 178. Which of the following is not a monosaccharide with 5 carbon atoms?
  1.    Arabinose
  2.    Xylulose
  3.    Trehalose
  4.    Ribulose
 Discuss Question
Answer: Option C. -> Trehalose
Answer: (c).Trehalose
Question 179. In cell membranes, carbohydrates in glycoproteins or glycolipids are oriented?
  1.    Towards outside
  2.    Towards inside
  3.    Towards outside and inside
  4.    Randomly distributed
 Discuss Question
Answer: Option A. -> Towards outside
Answer: (a).Towards outside
Question 180. Which of the following are found in connective tissues?
  1.    Glycosaminoglycans
  2.    Proteoglycans
  3.    Glycoproteins
  4.    Glycolipids
 Discuss Question
Answer: Option B. -> Proteoglycans
Answer: (b).Proteoglycans

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