EASY

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Liver stores glucose as starch.

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Important Questions on Nutrition

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Assertion $(A) :$ Starch can hold iodine molecules whereas cellulose cannot hold iodine molecules.

Reason $(R) :$ Cellulose forms helical secondary structures whereas starch does not contain complex helices.

The correct answer is:

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

The rigidity of cellulose is due to:

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

A polysaccharide '

X

' on boiling with dil

H_{2} {SO}_{4}

393 K

under

2 - 3 atm

pressure yields '

Y

' '

Y

' on treatment with bromine water gives gluconic acid. '

X

' contains

β

-glycosidic linkages only. Compound '

X

' is :

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Give the plausible explanation for the following:

Starch and cellulose both contain glucose unit as monomer, yet they are structurally different.

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Which of the following is a branched polymer, having branched chain polysaccharide units ?

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Identify the product of the following reaction.

Question Image

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Glycogen is an example of

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

What is glycogen? How is it different from starch?

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Which of the given statements is incorrect about glycogen?

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

The structure of the following polymer is:

Question Image

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Match the biological molecule listed under column I with their biological functions listed under column II and select the answer which gives the correct combination of alphabets of the two columns.

	Column I (Biological molecules)		Column II (Functions)
A.	Glycogen	p.	Hormone
B.	Globulin	q.	Biocatalyst
C.	Steroids	r.	Antibody
D.	Thrombin	s.	Storage product

HARD

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Enlist the natural sources, structural units and functions of the polysaccharides starch, cellulose and glycogen.

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Starch is changed into disaccharides in presence of:

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

What is glycogen? How is it different from starch?

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Carbohydrates are essential for life in both plants and animals. Name the carbohydrates that are used as storage molecules in plants and animals, also name the carbohydrate which is present in wood or in the fibre of cotton cloth.

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Which one is polymer?

EASY

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Cellulose, the most important constituent of the plant cell wall is made up of

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Which of the following polymer is stored in the liver of animals?

MEDIUM

Science>Biology>Nutrition>Basic Food Groups and Classes of Nutrients

Cellulose on acetylation with excess acetic anhydride