Biomolecules Test

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Biomolecules Test - 72

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Weekly Quiz Competition

Question 1
1 / -0

which is polysaccharide

A
Starch

B
Cellulose

C
Glycogen

D
All of these

Solution

$$\text{Polysaccharides are long chains of carbohydrate molecules,}$$ specifically polymeric carbohydrates composed of monosaccharide units bound together by $$\text{glycosidic linkages.}$$ This carbohydrate can react with water using amylase enzymes at catalyst, which produces constituent sugars. there are three common and principal types of polysaccharide include, $$\text{cellulose, starch and glycogen,}$$ all made by joining together molecules of glucose in different ways.
Question 2
1 / -0

Maltose on hydrolysis gives

A
Mannose + glucose

B
Galactose + glucose

C
Glucose

D
Mannose + fructose

Solution

$$ \begin{matrix} C_{12}H_{22}O_{11} \\ Maltose \end{matrix}+H_2O \xrightarrow [(From \ yeast)]{Maltase} \begin{matrix} 2C_6H_{12}O_6 \\ Glucose \end{matrix} $$
Question 3
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General formula for carbohydrates is

A
$$C_nH_{2n}O_{2n+2}$$

B
$$C_x(H_2O)_{2x}$$

C
$$C_x(H_2O)_y$$

D
None of these

Solution

Carbohydrates are hydrates of carbon. Their general formula is $$C_x(H_2O)_y$$
Question 4
1 / -0

Which of the following compound is an amino acid?

A

B

C

D

Solution

The compounds in which both amino $$(-NH_{2})$$ as well as acidic $$(-COOH)$$ group is present is called amino acid.
Question 5
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Amylopectin is

A
Water soluble

B
Water insoluble

C
Forms colloidal solution of water

D
Both b and c

Solution

Amylopectin is not soluble in water.
Question 6
1 / -0

Sucrose on hydrolysis gives

A
Two molecules of glucose

B
Two molecules of fructose

C
One molecule each of glucose and fructose

D
One molecule each of glucose and mannose

Solution

$$\text{Hydrolysis breaks the glycosidic bond converting sucrose into glucose and fructose one molecule of each.}$$
Question 7
1 / -0

Which of the following is carbohydrate

A
Leucine

B
Albumin

C
Inulin

D
Maltase

Solution

Inulin is a carbohydrate which is stored in "Roots of Dahliya".
Question 8
1 / -0

Which one is a disaccharide

A
Glucose

B
Fructose

C
Xylose

D
Sucrose

Solution

$$\text{Disaccharide}$$, also called double sugar, any substance that is $$\text{composed of two molecules of simple sugars}$$ $$(monosaccharides)$$ linked to each other. Disaccharides are $$\text{crystalline water-soluble}$$ compounds.

$$\text{sucrose — common table sugar = glucose + fructose.}$$
Question 9
1 / -0

Which among the following is the simplest

A
Glucose

B
Cellulose

C
Starch

D
None of these

Solution

Glucose is the simplest carbohydrate i.e. mono saccharide rest are polysaccharide.
Question 10
1 / -0

When amylase catalyse the hydrolysis of starch, the final product obtained is chiefly

A
Cellobiose

B
Glucose

C
Maltose

D
Sucrose

Solution

$$Starch \overset{Amylase}{\rightarrow}Maltose$$