Multiple Choice QuestionsAn example of competitive inhibition of an enzyme is the inhibition of:
succinic dehydrogenase by malonic acid
cytochrome oxidase by cyanide
hexokinase by glucose-6-phosphate
carbonic anhydrase by carbon dioxide
Antibiotic flavicin is obtained from
Aspergillus flavus
Aspergillus clavatum
Streptomyces grieseus
Streptomyces fradiae
Carbohydrates, ingested in the diet, are hydrolyzed by the enzyme :
pepsin
cellulose
- amylase
glycosidase
C.
- amylase
The principal of carbohydrate in diet is starch i.e., the carbohydrates, ingested in the diet, are hydrolyzed by the enzyme called -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.
Quaternary structure of protein
consists of four subunits
may be either or
is unrelated to two functions of the protein
is dictated by the primary structures of the individual subunits
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