Explain the mechanism of action of the enzyme aconitase on citrate in TCA cycle.

Compare the functions of RNA polymerase with DNA polymerase. How is transcription terminated?

ATP - the energy currency of cell

ATP - the energy currency of cell

Mitchell's chemiosmotic hypothesis

Explain homeostasis. How is the water balance maintained in the body?

With the help of an example explain the significance of coupling in biological reactions.

With the help of an example explain the significance of coupling in biological reactions.

How is the standard free energy for chemical reactions different from the standard free energy for biochemical reactions?

How is the standard free energy for chemical reactions different from the standard free energy for biochemical reactions?

What are the structural and functional differences between myoglobin and haemoglobin?

What are the structural and functional differences between myoglobin and haemoglobin?

Write a short note on the different forms of RNA.

Draw the structure of a dinucleotide of adenosine - 5'-phosphate and uridine - 5'-phosphate. In which process of protein biosynthesis, t RNA is involved? Illustrate the gross structural features of t - RNA. Indicate the different regions.

Explain the 'fluid mosaic model' for membrane structure.

Explain the 'fluid mosaic model' for membrane structure.

 A fat has low iodine number and a high saponification number. What do you infer from that? What are essential fatty acids and why are they essential?

 Discuss the classification of carbohydrates on the basis of number of saccharide units giving example of each class.

 Discuss the classification of carbohydrates on the basis of number of saccharide units giving example of each class.

 What are anomers? Explain the existence of anomers in sugars taking D-glucose as an illustrative case.