Question
All of the following statements apply to proteins except
A.
Proteins generally have no definite melting point
B.
Proteins contain the grouping \[-CONH-\]
C.
Proteins have high molecular weight
D.
Proteins can only contain the elements $$C,H,O$$ and $$N.$$
Answer :
Proteins can only contain the elements $$C,H,O$$ and $$N.$$
Solution :
Statement (D) is not correct. Some proteins also contain $$S,$$ with $$C, H, O$$ and $$N.$$