This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure & Function of Protein, Subject name: Biochemistry
Albumin and globulin are classified as: 
Select and explain. 
A. Conjugate proteins, B. Secondary proteins, C. Simple globular proteins, D. Derived proteins
C: Simple globular proteins
Answer: C: Simple globular proteins 
Explanation: Ans. C. Simple globular proteinsa. Proteins on the basis of solubility and physical properties divided into three classes:b. Simple proteins which on complete hydrolysis yield only amino acids. Ex. Albumins, Histones, Globulins, prolamines, Scleroproteins.c. Conjugate proteins which in addition to amino acids contain a non-protein part or prosthetic group. Ex. Nucleoproteins, Mucoprotein, Glycoproteins, Lipoproteins, Chromoprotein, Phosphoproteins.d. Derived proteins are the proteins formed from native protein by the action of heat, physical forces or chemical factors. Ex. Peptones, elastin, myosan.