Q. ln a prokaryotic cell the respiratory enzymes are located in

  • (A) Plasma membrane
  • (B) Mitochondria
  • (C) Cytoplasm
  • (D) Lysosomes
πŸ’¬ Discuss
βœ… Correct Answer: (A) Plasma membrane

Q. Autotrophic organisms include

  • (A) Green plants and purple sulphur bacteria (PSB)
  • (B) Green plants and all bacteria
  • (C) Bacteria and viruses
  • (D) Bacteria and viruses
πŸ’¬ Discuss
βœ… Correct Answer: (A) Green plants and purple sulphur bacteria (PSB)

Q. Electron from Cyt-C are carried to molecular O2 in

  • (A) Fermentation
  • (B) Aerobic respiration
  • (C) Anaerobic respiration
  • (D) Denitrification
πŸ’¬ Discuss
βœ… Correct Answer: (B) Aerobic respiration

Q. The first step in photosynthesis is

  • (A) Ionization of water
  • (B) Formation of ATP
  • (C) Attachment of CO2 to 5-carbon sugar
  • (D) Excitement of electron to chlorophyll-a by photon of light
πŸ’¬ Discuss
βœ… Correct Answer: (A) Ionization of water

Q. The hydrogen donor in bacterial photosynthesis is usually

  • (A) Water
  • (B) Ammonia
  • (C) Hydrogen sulphide
  • (D) Sulphur
πŸ’¬ Discuss
βœ… Correct Answer: (C) Hydrogen sulphide

Q. When sunlight is on the chloroplast, pH is lowest in the

  • (A) Stroma
  • (B) Space enclosed by the inner and outer membrane
  • (C) Space enclosed by the thylakoid membrane
  • (D) Cytosol
πŸ’¬ Discuss
βœ… Correct Answer: (C) Space enclosed by the thylakoid membrane

Q. The light reaction of photosynthesis does not include?

  • (A) Chemiosmosis
  • (B) Charge separation
  • (C) Electron transport
  • (D) Oxygen liberations
πŸ’¬ Discuss
βœ… Correct Answer: (B) Charge separation

Q. The core functional unit present-in NADH is

  • (A) Pyridine
  • (B) Dihydro pyridine
  • (C) Purine
  • (D) pyrimidine
πŸ’¬ Discuss
βœ… Correct Answer: (B) Dihydro pyridine

Q. For metabolic engineering in plants having improved tolerance to osmotic stress, mannitol is overproduced because it

  • (A) Lowers the water potential in the plant cell
  • (B) Increases the water potential I the plant cell
  • (C) Lowers membrane potential in the plant cell
  • (D) Increases membrane potential in the plant cell
πŸ’¬ Discuss
βœ… Correct Answer: (A) Lowers the water potential in the plant cell

Q. Enzyme of TCA cycle in prokaryotic cells are located in

  • (A) Plasma membrane
  • (B) Mitochondria
  • (C) Nucleus
  • (D) Golgi bodies
πŸ’¬ Discuss
βœ… Correct Answer: (A) Plasma membrane

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