Concanavalin A is:
an alkaloid
an essential oil
a lectin
a pigment
Extracellular coats - mucoprotein or glycoprotein -
A glycocalyx or mucous coat of protein and mucopolysaccharide, cover epithelial lining of gastrointestinal tract.
-
Concanavalin A is a lectin, i.e, carbohydrates biding protein which is extracted from Jack - bean. It binds specifically to sugars , glycoproteins and glycolipids.
Option 1)
an alkaloid
Option 2)
an essential oil
Option 3)
a lectin
Option 4)
a pigment