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MCQs

Total Questions : 310 | Page 24 of 31 pages
Question 231. In order to get inorganic phosphorous into organic compounds, the phosphate ion is incorporated via
  1.    oxidative phosphorylation
  2.    DNA
  3.    substrate level phosphorylation
  4.    both (a) and (b)
 Discuss Question
Answer: Option D. -> both (a) and (b)
Question 232. During the reduction phase of the Calvin cycle, phosphoglyceric acid is reduced to______utilizing________as the reduction source.
  1.    phosphoglyceraldehyde; NADH+H+
  2.    phosphoglyceraldehyde; NADPH+H+
  3.    pyruvic acid; NADPH+H+
  4.    ribulose 1,5 - bisphosphate; NADH+H+
 Discuss Question
Answer: Option B. -> phosphoglyceraldehyde; NADPH+H+
Question 233. The major route for incorporation of ammonia (NH4+) into organic compounds is via
  1.    reduction of pyruvate or alpha-ketoglutarate by enzymes
  2.    all of these
  3.    oxidation of pyruvate
  4.    atmospheric nitrogen fixation
 Discuss Question
Answer: Option A. -> reduction of pyruvate or alpha-ketoglutarate by enzymes
Question 234. The specific enzyme/(s) of the glyoxylate cycle is/are
  1.    malate synthase
  2.    anaplerotic
  3.    both (a) and (b)
  4.    isocitrate lyase
 Discuss Question
Answer: Option C. -> both (a) and (b)
Question 235. The catabolic reaction, pentose-phosphate exists in
  1.    eukaryotic cells
  2.    prokaryotic and eukaryotic cells both
  3.    prokaryotic cells
  4.    none of these
 Discuss Question
Answer: Option B. -> prokaryotic and eukaryotic cells both
Question 236. Entner - Doudoroff pathway is not found in
  1.    anaerobic prokaryotes
  2.    Both (a) and (b)
  3.    eukaryotes
  4.    aerobic prokaryotes
 Discuss Question
Answer: Option C. -> eukaryotes
Question 237. If ΔG of a chemical reaction has a negative value, the reaction
  1.    none of these
  2.    releases energy
  3.    both (a) and (b)
  4.    requires energy
 Discuss Question
Answer: Option B. -> releases energy
Question 238. ATPase
  1.    synthesizes ATP, coupled to transfer of extracellular protons into the cell
  2.    carries out each of the reactions indicated in (a) and (b)
  3.    extrudes protons from the cell coupled to the hydrolysis of ATP to ADP
  4.    is the enzyme that incorporates ATP into messenger RNA
 Discuss Question
Answer: Option B. -> carries out each of the reactions indicated in (a) and (b)
Question 239. Which of the following is responsible for phosphate solubilization?
  1.    Streptococcus
  2.    Streptomyces
  3.    Bacillus
  4.    Clostridium
 Discuss Question
Answer: Option C. -> Bacillus
Question 240. Aerobic catabolism of glucose yields how much energy (ATP synthesized) relative to glucose fermentation?
  1.    More than 10 times as much
  2.    Slightly less
  3.    Twice as much
  4.    About the same
 Discuss Question
Answer: Option A. -> More than 10 times as much

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