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.