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Biomolecules

Multiple Choice Questions

251.

Antibiotic flavicin is obtained from

Aspergillus flavus
Aspergillus clavatum
Streptomyces grieseus
Streptomyces fradiae

252.

Antifeedant property occurs in

nicotine
azadiractin
rotenone
cinerin

253.

Lipids are insoluble molecules are :

neutral
Zwitter ions
hydrophobic
hydrophilic

254.

Which of the following is the simplest amino acid?

Glycine
Alanine
Tyrosine
Asparagine

255.
Carbohydrates, ingested in the diet, are hydrolyzed by the enzyme :

pepsin

cellulose

$α$ - amylase

glycosidase

$α$ - amylase

The principal of carbohydrate in diet is starch i.e., the carbohydrates, ingested in the diet, are hydrolyzed by the enzyme called $α$ -amylase. This enzyme is found in saliva and intestinal juice. It's main function is to break down glycosidic bonds between glucose units.

Pepsin is an endopeptidase that breaks down proteins into smaller peptides. It is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals.

Cellulose is the main constituent of cell wall in plants. It provides rigidity or stiffness to plants. It is the abundant organic compound on Earth.

Glucosidases are enzymes involved in breaking down complex carbohydrates such as starch and glycogen into their monomers. Their main function is to catalyze the cleavage of individual glucosyl residues from various glyco- conjugates including alpha or beta linked polymers of glucose.