Given below are two statements : One is labeled as Assertion A and the other is labelled as Reason R

Assertion A : Amylose is insoluble in water.           

Reason R: Amylose is a long linear molecules with more than 200 glucose units.

In the light of the above statements, choose the correct answer from the options given below

Insulin is a globular proteins.

Ionisation enthalpy increases in a period. Z dominates over screening effect (s) in a period as Z_eff. increases.

Kindly go through the solution

Histidine is an essential amino acid

Lactose is a disaccharide which is formed by forming C? -C? glycosidic linkage between D-galactose and D- glucose.
Lactose - (Hydrolysis)-> D - galactose + D - glucose