Question

protiens of animal origin are called first class protains . ​

Answer 1

Answer:

Amylase

An amylase (/ˈæmɪleɪz/) is an enzyme that catalyses the hydrolysis of starch (Latin amylum) into sugars. Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion.

Explanation:

Answer 2

Answer:

proteins from animals are called 'first class proteins' - they provide all the essential amino acids, including those that the body can't make. proteins from plants are 'second class' proteins.