Biomolecules Ques 6

6. Which is the correct statement?

[2001]

(a) Starch is a polymer of $\alpha$-glucose

(b) In cyclic structure of fructose, there are five carbons and one oxygen atom

(c) Amylose is a component of starch

(d) Proteins are composed of multiple types of amino acids

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Solution:

Starch is also known as amylum which occurs in all green plants. A molecule of starch $(C_6 H_{10} O_5)_n$ is built of a large number of $\alpha$-glucose rings joined through oxygen atoms.