Biomolecules (Biology)

The major role of minor elements inside living organisms is to act as

1. co-factors of enzymes
2. building blocks of important amino acids
3. constituent of hormones
4. binder of cell structure.

In which one of the following nitrogen is not a constituent ?

1. Pepsin
2. Invertase
3. Idioblast
4. Bacteriochlorophyll

Lipids are insoluble in water because lipid molecules are

1. hydrophilic
2. hydrophobic
3. neutral
4. zwitterions.

Which of the following is a reducing sugar?

1. Galactose
2. Gluconic acid
3. -methyl galactoside
4. Sucrose

Collagen is:

1. Globular protein
2. Fibrous protein
3. Carbohydrate
4. Lipid

Most abundant organic compound on earth is

1. Cellulose
2. Steroids
3. Protein
4. Lipids

Spoilage of oil can be detected by which fatty acid?

1. Linolenic acid
2. Erucic acid
3. Linoleic acid
4. Oleic acid

In plants, inulin and pectin are

1. Excretory material
2. Reserve material
3. Insect attracting material
4. Wastes

Role of enzyme in reactions is to/as

1. decrease activation energy
2. increase activation energy
3. inorganic catalyst
4. none of the above.

Which factor is responsible for inhibition of enzymatic process during feedback?

1. Substrate
2. Enzymes
3. End product
4. Temperature