Compounds which consists of only one type of monosaccharide monomer are called homopolysaccharides. Which one of the following does not belong this category?

1. Starch 

2. Pectin

3. Cellulose

4. Glycogen

Exoskeleton of anthropods possesses chitin which is

1. A complex polysaccharide 

2. A polymer of N-acetylglucosamine

3. Known for forming complex helices in its secondary structure

4. Both (1) & (2)

Most enzymes consist of two parts i.e. 

1. Holoenzyme and prosthetic group

2. Enzyme and coenzyme

3. Apoenzyme and enzyme

4. Apoenzyme and cofactor

Which one is the most abundant protein in the animal world?

1. Collagen

2. RUBISCO

3.Trypsin

4. Insulin

Which of the following does not affect the activity of simple enzyme?

1. Temperature

2. Presence of coenzymes

3. pH

4. Substarate concentration

Which of the following is incorrect match of the compounds shown?

The following graphs show enzymatic activity for certain factors on x-axis and y-axis. Which of the following is correct in such regard?

1. Figure (1) ; x-axis - Potential energy , y-axis- Progress of reaction

2. Figure (2) ; x-axis - Enzymatic activity, y-axis- Temperature

3. Figure (3) ; x-axis- Velocity of reaction, y-axis-Substrate concentration

4. Figure (2) ; x-axis- pH, y-axis- Enzymatic activity                                                 

Which of the following statements is not correct about proteins?

1. The first amino acid of all the proteins is also known as N-terminal amino acid

2. In proteins, only right handed helics are observed

3. $\alpha$- helics are tertiary structures of proteins 

4. Primary structure of a protein dictates its secondary and tertiary conformations

Which of the following is incorrect statement with respect to carbohydrates?

1. Mannose and galactose are polymers of glucose 

2. Cellulose acetate is used in fabrics, cellulosic plastics and shatter proof glasses

3. Most of sugars show Benedict's test but not sucrose

4. Sucrose is composed of glucose and fructose and is a non-reducing sugar

Which of the following is diagrammatic representation of phospholipid (lecithin)?