Q. In photosynthesis, light is converted into

  • (A) Heat energy
  • (B) O2 and hexose sugars
  • (C) Chemical energy
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (C) Chemical energy

Q. Which one of the following plants exhibits both C3 and C4 pathways?

  • (A) Zea mays
  • (B) Oryza sativa
  • (C) Mesembryanthemum crystallinum
  • (D) Arabidopsis thaliana
πŸ’¬ Discuss
βœ… Correct Answer: (A) Zea mays

Q. The ATP synthase of bacteria is an F1-like particle attached to the

  • (A) Ends of proto-mitochondria
  • (B) Inner surface of the cell (or plasma) membrane
  • (C) Outer surface of the cell (or plasma) membrane
  • (D) Surface of protonic vesicles
πŸ’¬ Discuss
βœ… Correct Answer: (B) Inner surface of the cell (or plasma) membrane

Q. In Embden Meyerhof pathway, conversion of 3 - phosphoglycerate to phosphoenol pyruvate is catalysed by the enzyme

  • (A) Phosphofructokinase
  • (B) Phosphoglyconomutase
  • (C) Phosphoglycerate kinase
  • (D) Enolase
πŸ’¬ Discuss
βœ… Correct Answer: (D) Enolase

Q. RuDP carboxylase can utilize following as the substrate

  • (A) Water
  • (B) O2 and CO2
  • (C) O2
  • (D) CO2
πŸ’¬ Discuss
βœ… Correct Answer: (D) CO2

Q. Substrate level phosphorylation takes place in Krebs cycle in between

  • (A) Succinyl co-A and succinic acid
  • (B) Succinic acid and fumaric acid
  • (C) Fumaric acid and malic acid
  • (D) Isocitric acid and α-ketoglutaric acid
πŸ’¬ Discuss
βœ… Correct Answer: (A) Succinyl co-A and succinic acid

Q. The driving force for mass transfer by molecular diffusion is the difference in

  • (A) Potential energy
  • (B) Vapour pressure
  • (C) Gibbs free energy
  • (D) Chemical potential
πŸ’¬ Discuss
βœ… Correct Answer: (D) Chemical potential

Q. The Warburg effect in cancers refers to their ability to

  • (A) Perform aerobic glycolysis
  • (B) Perform anaerobic glycolysis
  • (C) Promote angiogenesis
  • (D) Promote angiogenesis and metastasis
πŸ’¬ Discuss
βœ… Correct Answer: (A) Perform aerobic glycolysis

Q. Escherichia coli grown in the presence of high amounts of glucose. Which of the following is true?

  • (A) The cell wall utilize lactose as a carbon source exclusively
  • (B) The level of cyclic AMP is the cell wall be high
  • (C) The level of cyclic AMP is the cell wall be low
  • (D) Transcription of m RNA from the lac operon will be high
πŸ’¬ Discuss
βœ… Correct Answer: (C) The level of cyclic AMP is the cell wall be low

Q. Upon application of the inhibitor, DBMIB (Dibromomethylmoquinone) which one of the following events in the chloroplast electron transport chain will not take place?

  • (A) Reduction of reaction centre Qa
  • (B) Reduction of plastocyanine (PC)
  • (C) Reduction of Cytb6f
  • (D) PQ will remain oxidised
πŸ’¬ Discuss
βœ… Correct Answer: (C) Reduction of Cytb6f

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