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MCQs

Total Questions : 310 | Page 30 of 31 pages
Question 291. . The bacteriochlorophylls used by the anoxygenic bacteria have absorbance maxima located in the_____portion(s) of the spectrum.
  1.    green
  2.    blue
  3.    ultraviolet
  4.    infrared
 Discuss Question
Answer: Option D. -> infrared
Question 292. . Entner - Doudoroff pathway is not found in
  1.    aerobic prokaryotes
  2.    anaerobic prokaryotes
  3.    Both (a) and (b)
  4.    eukaryotes
 Discuss Question
Answer: Option D. -> eukaryotes
Question 293. . The catabolic reaction, pentose-phosphate exists in
  1.    prokaryotic cells
  2.    eukaryotic cells
  3.    prokaryotic and eukaryotic cells both
  4.    none of these
 Discuss Question
Answer: Option C. -> prokaryotic and eukaryotic cells both
Question 294. . If ΔG of a chemical reaction has a negative value, the reaction
  1.    releases energy
  2.    requires energy
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option A. -> releases energy
Question 295. . Aerobic catabolism of glucose yields how much energy (ATP synthesized) relative to glucose fermentation?
  1.    Slightly less
  2.    About the same
  3.    Twice as much
  4.    More than 10 times as much
 Discuss Question
Answer: Option D. -> More than 10 times as much
Question 296. . The relationship between an oxidation-reduction potential difference and the standard free energy change is (where n is the number of moles of electron transferred, F= Faraday's constant and E°= standard oxidation-reduction potential difference)
  1.    ΔG° = -nFE°
  2.    ΔG° = nFE°
  3.    ΔG° = -nFlnE°
  4.    ΔG° = nFlnE°
 Discuss Question
Answer: Option A. -> ΔG° = -nFE°
Question 297. . ATPase
  1.    synthesizes ATP, coupled to transfer of extracellular protons into the cell
  2.    extrudes protons from the cell coupled to the hydrolysis of ATP to ADP
  3.    is the enzyme that incorporates ATP into messenger RNA
  4.    carries out each of the reactions indicated in (a) and (b)
 Discuss Question
Answer: Option D. -> carries out each of the reactions indicated in (a) and (b)
Question 298. . Which of the following is responsible for phosphate solubilization?
  1.    Streptococcus
  2.    Streptomyces
  3.    Bacillus
  4.    Clostridium
 Discuss Question
Answer: Option B. -> Streptomyces
Question 299. . Phosphate deregulated mutants are
  1.    less sensitive to phosphate regulation
  2.    moderately sensitive to phosphate regulation
  3.    highly sensitive to phosphate regulation
  4.    none of these
 Discuss Question
Answer: Option A. -> less sensitive to phosphate regulation
Question 300. . The mechanism of passive or facilitated diffusion require
  1.    metabolic energy
  2.    concentration of solute against an electrochemical gradient
  3.    accumulation of solute against an electrochemical gradient
  4.    accumulation or concentration of solute against an electrochemical gradient
 Discuss Question
Answer: Option A. -> metabolic energy

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