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MCQs

Total Questions : 310 | Page 27 of 31 pages
Question 261. . 
In establishing proton gradient for chemiosmotic ATP generation by aerobic respiration the terminal electron acceptor is
  1.    nitrate
  2.    oxygen
  3.    sulfate
  4.    CO2
 Discuss Question
Answer: Option B. -> oxygen
Question 262. .  If ΔG of a chemical reaction is positive in value and keq is less than 1 then the chemical reaction will
  1.    proceed in reverse direction
  2.    proceeed in forward direction
  3.    not take place in any of the direction
  4.    none of these
 Discuss Question
Answer: Option A. -> proceed in reverse direction
Question 263. . The reaction, where small precursor molecules are assembled into larger organic molecules is referred as
  1.    anabolism
  2.    catabolism
  3.    metabolism
  4.    any of these
 Discuss Question
Answer: Option A. -> anabolism
Question 264. . DAHP synthetase catalyzes the condensation of
  1.    erythrose-4-phosphate
  2.    phosphoenol pyruvate
  3.    both (a) and (b)
  4.    phenylalanine
 Discuss Question
Answer: Option C. -> both (a) and (b)
Question 265. . Which of the following nucleoside diphosphates is used most often in carbohydrate anabolism?
  1.    Uridine diphosphate
  2.    Adenosine diphosphate
  3.    Guanine diphosphate
  4.    Thymine diphosphate
 Discuss Question
Answer: Option A. -> Uridine diphosphate
Question 266. . Phosphate is considered to restrict the induction of
  1.    primary metabolites
  2.    secondary metabolites
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option B. -> secondary metabolites
Question 267. . Which of the following does not produce oxygen as a product of photosynthesis?
  1.    Oak trees
  2.    Purple sulfur bacteria
  3.    Cyanobacteria
  4.    Phytoplankton
 Discuss Question
Answer: Option B. -> Purple sulfur bacteria
Question 268. . Free energy change (ΔG) of a reaction is referred as the amount of energy
  1.    liberated during reaction
  2.    taken up during reaction
  3.    liberated or taken up during reaction
  4.    none of these
 Discuss Question
Answer: Option C. -> liberated or taken up during reaction
Question 269. . The glyoxylate cycle is used by some microorganisms when___________ is the sole carbon source.
  1.    acetate
  2.    nitrate
  3.    carbon dioxide
  4.    all of these
 Discuss Question
Answer: Option A. -> acetate
Question 270. . When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called
  1.    pentose phosphate pathway
  2.    glycolyic pathway
  3.    glyoxylate pathway
  4.    oxaloacetate pathway
 Discuss Question
Answer: Option C. -> glyoxylate pathway

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