Casein present in milk is a/an .......

Identify the incorrect statement regarding conjugated proteins.

Which of the following are basic amino acids?

Which factor causes the denaturation of proteins?

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Primary protein	$(P)$ Globular or fibrous form
$(2)$ Secondary protein	$(Q)$ Three-dimensional arrangement of a single polypeptide chain
$(3)$ Tertiary protein	$(R)$ Gene-controlled
$(4)$ Quaternary protein	$(S)$ Helical or pleated sheet form

Proteins have a primary structure. If you are given a method to know which amino acid is at either of the two termini (ends) of a protein,can you connect this information to the purity or homogeneity of a protein?