Consider the following two statements regarding enzyme action:

I:	Co-factors play a crucial role in the catalytic activity of the enzyme.
II:	Catalytic activity is reduced when the co-factor is removed from the enzyme.

Of the above statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct

Assuming they all had the same number of carbon atoms, which of the following has the most C-H bonds?
1. an unsaturated fat
2. a polyunsaturated fat
3. a polysaccharide
4. a saturated fat

An alpha helix is a:
1. primary structure of a protein
2. secondary structure of a protein
3. tertiary structure of a protein
4. quaternary structure of a protein

The inhibition of succinic dehydrogenase by malonate is an example of:

The enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are called as:

Consider the following enzymes:
I. Catalase
II. Peroxidase
III. Carboxypeptidase
Which of these enzymes require haem as a co-factor for their activity?

Chitin, a complex polysaccharide, is found in:

Given below is the structure of a monosaccharide. The homopolymer of this monosaccharide is used in:

1. Storage of carbohydrates in plants 2. Storage of carbohydrates in animals 3. Making the medium for microbial culture 4. Formation of the structure of the plant cell wall

Given below is the structure of a lipid. The excess of this compound in human blood can lead to:

Shown below is a level of structural organization of a protein. Which of the following proteins attains its final form as this structure?