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MCQs

Total Questions : 310 | Page 2 of 31 pages
Question 11. 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
Answer: (d).eukaryotes
Question 12. 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
Answer: (d).More than 10 times as much
Question 13. 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°
Answer: (a).ΔG° = -nFE°
Question 14. 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
Answer: (d).infrared
Question 15. 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)
Answer: (d).carries out each of the reactions indicated in (a) and (b)
Question 16. Which of the following is responsible for phosphate solubilization?
  1.    Streptococcus
  2.    Streptomyces
  3.    Bacillus
  4.    Clostridium
 Discuss Question
Answer: Option C. -> Bacillus
Answer: (c).Bacillus
Question 17. 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
Answer: (a).metabolic energy
Question 18. Bacteriochlorophyll differs from chlorophyll in what way?
  1.    The chelated metal in bacteriochlorophyll is not Mg
  2.    There are chemical differences between the two chlorophyll in their side (R) groups
  3.    They have different absorption spectra
  4.    Both (b) and (c)
 Discuss Question
Answer: Option D. -> Both (b) and (c)
Answer: (d).Both (b) and (c)
Question 19. Nitrogen fixation is a process that requires
  1.    energy
  2.    an anaerobic environment
  3.    both (a) and (b)
  4.    an aerobic environment
 Discuss Question
Answer: Option C. -> both (a) and (b)
Answer: (c).both (a) and (b)
Question 20. 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
Answer: (a).less sensitive to phosphate regulation

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