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 $$N.$$

Releted MCQ Question on
Organic Chemistry >> Biomolecules

Releted Question 1

The pair of compounds in which both the compounds give positive test with Tollen’s reagent is

A. Glucose and Sucrose
B. Fructose and Sucrose
C. Acetophenone and Hexanal
D. Glucose and Fructose
Releted Question 2

The two forms of $$D - $$ glucopyranose obtained from the solution of $$D - $$ glucose are called

A. Isomers
B. Anomers
C. Epimers
D. Enantiomers
Releted Question 3

Cellulose upon acetylation with excess acetic anhydride/ $${H_2}S{O_4}$$  (catalytic) gives cellulose triacetate whose structure is

A. Biomolecules mcq option image
B. Biomolecules mcq option image
C. Biomolecules mcq option image
D. Biomolecules mcq option image
Releted Question 4

The following carbohydrate is
Biomolecules mcq question image

A. a ketohexose
B. an aldohexose
C. an $$\alpha $$ - furanose
D. an $$\alpha $$ - pyranose

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Biomolecules


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