Biochemistry Answers

Explain the structure and functions of mitochondria.

Explain the role of uncouplers in electron transport chain or oxidative phosphorylation.Illustrate the answer with the help of an example.

Differentiate between the following with the help of examples in each case.
(i) Convergent and Divergent nature of catabolism and anabolism respectively
(ii)Homolactic and Alcoholic fermentation

Explain the stereochemistry of peptide bond.What do the φ and ψ angles signify in peptides?

What is the difference between a fat and a fatty acid?What is the significance of iodine number for a fatty acid? Explain with help of an example.

Discuss briefly the experiment of Griffith and Avery.

How is the enzyme pyruvate dehydrogenase complex different from other enzymes? Explain how it functions in the conversion of pyruvate to acetyl-CoA.

If you were studying an enzyme that catalyzed the reaction of ATP and fructose 1-
phosphate to form fructose 1,6-bisphosphate and ADP and discovered that a plot of the
initial velocity of formation of fructose 1,6-bisphosphate versus ATP concentration was
not hyperbolic, but rather sigmoid, what would you suspect?

4. If you were studying an enzyme that catalyzed the reaction of ATP and fructose 1-
phosphate to form fructose 1,6-bisphosphate and ADP and discovered that a plot of the
initial velocity of formation of fructose 1,6-bisphosphate versus ATP concentration was
not hyperbolic, but rather sigmoid, what would you suspect?

What is meant by water potential in simple terms?