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MCQs

Total Questions : 310 | Page 28 of 31 pages
Question 271. . Incorporation of atmospheric N2to NH4+ occurs via the process of
  1.    assimilatory nitrate reduction
  2.    transamination
  3.    deamination
  4.    nitrogen fixation
 Discuss Question
Answer: Option D. -> nitrogen fixation
Question 272. . Standard free energy change (ΔG) can be expressed as
  1.    ΔG° = -RTlnkeq
  2.    ΔG° = RTlnkeq
  3.    ΔG° = R/Tlnkeq
  4.    ΔG° = -RT/lnkeq
 Discuss Question
Answer: Option A. -> ΔG° = -RTlnkeq
Question 273. . If radioactive bicarbonate was supplied to bacterial cells, which were actively synthesizing fatty acids, it is expected to find the bulk of the radioactivity in
  1.    cellular bicarbonate
  2.    the fatty acids
  3.    the cytoplasmic membrane
  4.    nucleic acids
 Discuss Question
Answer: Option A. -> cellular bicarbonate
Question 274. . Hexose monophosphate pathway is also known as
  1.    phosphogluconate pathway
  2.    oxaloacetate pathway
  3.    malate pathway
  4.    fumerate pathway
 Discuss Question
Answer: Option A. -> phosphogluconate pathway
Question 275. . The role of bacteriophyll in an oxygenic photosynthesis is to
  1.    reduce ferridoxin directly
  2.    reduce NADP directly
  3.    use light energy to energize an electron
  4.    transfer electrons to an intermediate in the sulfide oxidation pathway
 Discuss Question
Answer: Option C. -> use light energy to energize an electron
Question 276. . TCA cycle functions in
  1.    catabolic reactions
  2.    anabolic reactions
  3.    amphibolic reactions
  4.    none of these
 Discuss Question
Answer: Option C. -> amphibolic reactions
Question 277. . Which of the following catalyze liberation of orthophosphate from organic P compounds and inorganic pyrophosphate ?
  1.    Alkaline phosphates
  2.    Oxidoreductase
  3.    Protease
  4.    Hydrogenase
 Discuss Question
Answer: Option A. -> Alkaline phosphates
Question 278. . 
As the electron flow through the chains, much of their free energy is conserved in the form of ATP. This process is called
  1.    oxidative phosphorylation
  2.    electromotive potential
  3.    dehydrogenations
  4.    none of these
 Discuss Question
Answer: Option A. -> oxidative phosphorylation
Question 279. . Entner-Doudoroff pathway is found in
  1.    aerobic prokaryotes
  2.    anaerobic prokaryotes
  3.    both (a) and (b)
  4.    aerobic eukaryotes
 Discuss Question
Answer: Option C. -> both (a) and (b)
Question 280. . Which of the following(s) is/are the products of the light reactions of photosynthesis?
  1.    ATP only
  2.    NADPH only
  3.    ATP and O2 only
  4.    ATP, NADPH, and O2
 Discuss Question
Answer: Option D. -> ATP, NADPH, and O2

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