4.2 Carbohydrates - Set 1 Quiz

Report 1 / 5

The following shows a list of elements in carbohydrates except

(A)		Consists of the element carbon (C), hydrogen (H) and oxygen (O)

(B)		The ratio of C, H and O is 1:2:1

(C)		Consists of the element nitrogen (N), hydrogen (H), sulphur (S), oxygen (O), phosphorus (P) and carbon (C)

(D)		A source from plants

Difficulty Level: Medium

Report 2 / 5

The diagram shows a molecule of glucose and galactose.

These two molecules can form a bond in the process of \(\underline{\hspace{2cm}}\)by \(\underline{\hspace{2cm}}.\)

(A)		hydrolysis, removing one molecule of water

(B)		hydrolysis, adding one molecule of water

(C)		condensation, removing one molecule of water

(D)		condensation, adding one molecule of water

Difficulty Level: Hard

Report 3 / 5

Which of the following is true on the reaction of hydrolysis of maltose?

(A)		\(\text{maltose}\rightarrow\text{glucose}\hspace{0.1cm}+\text{glucose}\hspace{0.1cm}+H_2O\)

(B)		\(\text{maltose}+H_2O\rightarrow\text{glucose}\hspace{0.1cm}+\text{glucose}\hspace{0.1cm}\)

(C)		\(\text{maltose}\rightarrow\text{glucose}\hspace{0.1cm}+\text{fructose}\hspace{0.1cm}+H_2O\)

(D)		\(\text{maltose}+H_2O\rightarrow\text{glucose}\hspace{0.1cm}+\text{fructose}\hspace{0.1cm}\)

Difficulty Level: Medium

Report 4 / 5

Which of the following reaction is correct about polymerization of monosaccharides?

(A)		\(\text{Polysaccharides}\xrightarrow{\text{hydrolysis}}\text{monosaccharides}+H_2O\)

(B)		\(\text{Monosaccharides}+H_2O\xrightarrow{\text{hydrolysis}}\text{polysaccharides}\)

(C)		\(\text{Polysaccharides}+H_2O\xrightarrow{\text{condensation}}\text{monosaccharides}\)

(D)		\(\text{Monosaccharides}\xrightarrow{\text{condensation}}\text{polysaccharides}+H_2O\)

Difficulty Level: Hard

Report 5 / 5

Which of the following is the importance of glycogen for animals and humans?

I.		Food storage

II.		Prevent break down of proteins

III.		Maintain blood sugar level

IV.		The main component of DNA

Difficulty Level: Hard