Physiology and Metabolism MCQs

Question 1

Substrate level phosphorylation takes place in Krebs cycle in between

Accepted Answer

Succinyl co-A and succinic acid

Answer

Succinic acid and fumaric acid

Answer

Fumaric acid and malic acid

Answer

Isocitric acid and α-ketoglutaric acid

Question 2

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

Accepted Answer

Chemical potential

Answer

Potential energy

Answer

Vapour pressure

Answer

Gibbs free energy

Question 3

The Warburg effect in cancers refers to their ability to

Accepted Answer

Perform aerobic glycolysis

Answer

Perform anaerobic glycolysis

Answer

Promote angiogenesis

Answer

Promote angiogenesis and metastasis

Question 4

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

Accepted Answer

The level of cyclic AMP is the cell wall be low

Answer

The cell wall utilize lactose as a carbon source exclusively

Answer

The level of cyclic AMP is the cell wall be high

Answer

Transcription of m RNA from the lac operon will be high

Question 5

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

Accepted Answer

Reduction of Cytb6f

Answer

Reduction of reaction centre Qa

Answer

Reduction of plastocyanine (PC)

Answer

PQ will remain oxidised