Biochemistry Answers

What are the functional roles of tRNA and rRNA?Explain how these are structurally different and where are these RNAs found in cell?

What are the various types of specificities exhibited by enzymes?Illustrate your answer with an example for each.

What are the similarities with respect to composition in the four DNA nucleotides?

What is the significance of oxidative phosphorylation?Illustrate your answer with an example for each.

Define disaccharides.Write structure for disaccharides in which glucose units are linked together in the following ways.
(i)α-1,4 (ii)β-1,4 (iii)α-1,6 (iv)β-1,6

What is the difference between the electron transport reactions of mitochondria and the ones which take place in photosynthetic process?

Why do monosaccharide form cyclic structure?Draw the structures of open chain and cyclic forms of glucose.

Give the role of following vitamins in biochemical reactions.Explain with the help of an example.
(i)Thiamine
(ii) Pyridoxine
(iii)Riboflavin

Explain the following terms.
(i)Termination codons
(ii)Lac operon
(iii) Chemical carcinogens
(iv)Immobilised enzyme

Explain the following terms:
(i)Constitutive and induced enzymes
(ii)Metabolic regulation
(iii)Product inhibition