Biomolecules (Biology)

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by

1. base-sugar-phosphate
2. base-sugar-OH
3. (base-sugar-phosphate)n
4. sugar-phosphate

Carbohydrates, the most abundant biomolecule on earth, are produced by

1. some bacteria, algae and green plant cells
2. fungi, algae and green plant cells
3. all bacteria, fungi and algae
4. viruses, fungi and bacteria.

With which one of the following enzymes is copper necessarily associated as an activator?

1. Carbonic anhydrase
2. Tryptophanase
3. Lactic dehydrogenase
4. Tyrosinase

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