Question

Which of the following is correct statement?

A. Starch is a polymer of $$\alpha $$ - glucose  
B. Amylose is a component of cellulose
C. Proteins are composed of only one type of amino acid
D. In cyclic structure of fructose, there are four carbons and one oxygen atom
Answer :   Starch is a polymer of $$\alpha $$ - glucose
Solution :
Starch is also known as amylum which occurs in all green plants. A molecule of starch $${\left( {{C_6}{H_{10}}{O_5}} \right)_n}$$   is built of a large number of $$\alpha $$ - glucose ring joined through oxygen atom.

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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