A phosphoglyceride is always made up of:

1.	only an unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached.
2.	a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached.
3.	a saturated or unsaturated fatty acid esterified to a phosphate group which is also attached to a glycerol molecule.
4.	only a saturated fatty acid is esterified to a glycerol molecule to which a phosphate group is also attached.

Select the option which is not correct with respect to enzyme action:
 

Which one of the following is a non-reducing carbohydrate?

1. Maltose

2. Sucrose

3. Lactose

4. Ribose 5-phosphate

The essential chemical components of many coenzymes are:
1. Nucleic acid
2. Carbohydrates
3. Vitamins
4. Proteins

Transition state structure of the substrate formed during an enzymatic reaction is:
1. permanent but unstable
2. transient and unstable
3. permanent and stable
4. transient but stable

Macro molecule chitin is:

1. Phosphorus containing saccharide

2. Sulphur containing polysaccharide

3. Simple polysaccharide

4. Nitrogen-containing polysaccharide

Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component X in it:
     

Which one is the most abundant protein in the animal world?
1. Trypsin
2. Haemoglobin
3. Collagen
4. Insulin

Which one out of A-D given below correctly represents the structural formula of the basic amino acid?

A	B
C	D

Which one of the following structural formulae of two organic compounds are correctly identified along with its related function?