Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material?
 

(A)	Easily translocated
(B)	Chemically non-reactive
(C)	Easily digested by animals
(D)	Osmotically inactive
(E)	Synthesized during photosynthesis

The useful properties are:

1.	(B) and (C)
2.	(B) and (D)
3.	(A), (C) and (E)
4.	(A) and (E)

A competitive inhibitor of succinic dehydrogenase is:

The biological organisation starts with:

1. Submicroscopic molecular level

2. Cellular level

3. Organisms level

4. Atomic level

Which one of the following is a fat-soluble vitamin and its related deficiency disease?

1. Ascorbic acid - Scurvy

2. Retinol - Xerophthalmia

3. Cobalamine - Beri-Beri

4. Calciferol - Pellagra

An organic substance bound to an enzyme and essential for its activity is called:

1. coenzyme

2. holoenzyme

3. apoenzyme

4. isoemzyme

The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration) what do the two axis (X and Y) represent? 

        
   

	X-axis	Y-axis
(a)	Temperature	Enzyme activity
(b)	Substrate concentration	Enzyme activity
(c)	Enzyme activity	Temperature
(d)	Enzyme activity	pH

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

A	B
C	D

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

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