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NCERT Solutions for Class 12 Chemistry Chemistry Ii Chapter 14 Biomolecules

NCERT Solution For Class 12 Chemistry Chemistry Ii

Biomolecules Here is the CBSE Chemistry Chapter 14 for Class 12 students. Summary and detailed explanation of the lesson, including the definitions of difficult words. All of the exercises and questions and answers from the lesson's back end have been completed. NCERT Solutions for Class 12 Chemistry Biomolecules Chapter 14 NCERT Solutions for Class 12 Chemistry Biomolecules Chapter 14 The following is a summary in Hindi and English for the academic year 2024-25. You can save these solutions to your computer or use the Class 12 Chemistry.

Question 1

NCERT Solutions for Class 12 Chemistry Chemistry Ii Chapter 14 Biomolecules

NCERT Solution For Class 12 Chemistry Chemistry Ii

Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six membered ring compounds) are insoluble in water. Explain.

What are the expected products of hydrolysed of lactose?

How do you explain the absence of aldehyde group in the penta acetate of D-glucose?

The melting points and solubility of water of amino acids are generally higher than that of the corresponding halo acids. Explain.

Where does the water present in the egg go after the boiling the egg?

Why cannot vitamin C be stored in our body?

What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?

When RNA is hydrolysed, there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of RNA?

What is a biomoiecule?

Define carbohydrates.

Give one example each of (i) Reducing sugar and (ii) Non-reducing sugar.

Name the anomers of glucose.

State two characteristics of monosaccharides.

Name a carbohydrate containing five carbon atoms per molecule.

Name the monomers of starch.

Name the polysaccharides that is stored in the liver of animals.

What do you understand by the term gycosidic linkage?

What are the hydrolytic products of lactose?

What is meant by inversion of sugar?

Why is cellulose not a food for human beings?

Name three useful products that can be obtained from cellulose.

What are monosaccharides?

What are reducing sugars?

Which carbohydrate is called grape sugar? Give its condensed structural formula.

Write two main functions of carbohydrates in plants.

Classify the following into monosaccharides and disaccharides: Ribose, 2-deoxy-ribose, maltose, galactose, fructose and lactose.

What happens when sucrose is boiled with dilute HCl?

Give one reaction to show the presence of five hydroxyl groups in glucose.

How will you prove that all the carbon atoms of a glucose are in a straight chain?

Name the linkage when two monosaccharides unit join to form a polysaccharide unit.

Name the linkage when amino acids join together to form a protein.

Write the equation, which shows that glucose produces energy in human beings.

What happens when starch is boiled with dil. HCl?

What happens when cellulose is heated by dil. H2SO4?

Draw the open chain structure of glucose.

Define mutarotation.

Draw the structure of the α-glucose and β-glucose.

Which of the following disaccharides contains a glycosidic linkage between glucose and glucose.i)Sucroseii)Maltoseiii)Lactose

Which of the following disaccharides contains a glycosidic linkage between glucose and glucose Sucrose, Maltose, Lactose?

What are the hydrolysis products of (i) sucrose and (ii) lactose?

Name the water insoluble fraction of starch. Name the monomer of this.

Which component of starch gives a blue colour with iodine?

Amylose and cellulose are both straight chain polysaccharides containing only D-glucose units. What is the structural difference between the two?

Name any two products derived from cellulose.

Give one test to distinguish glucose and fructose.

How many members (atoms) will constitute the pyranose ring of glucose?

What is the basic difference betweeen starch and cellulose?

Why is glucose given to the patient under exhausation?

What is the action of bromine water on: (i) glucose, (ii) fructose?

What are the products obtained on the fermentation of glucose?

What is an amino acid? Give one example.

Write the structural formula of a Zwitter ion.

How do amino acids form proteins?

What are the monomers constituting proteins?

In what respect would any two naturally occurring amino acids differ from one another?

Describe the bonds responsible for the primary structure of proteins.

Describe the bonds responsible for the secondary structure of proteins.

Name two important secondary structural forms for a protein.

What type of bonding helps in stabilising the α-helix structure of proteins?

What type of bonding occurs in β-pleated sheet?

What type of bonding occurs in globular proteins?

What happens when a protein is denatured?

Give one example of denatured protein.

What are enzymes?

Name the disease caused due to the deficiency of phenyalanine hydroxylase.

Name the enzyme that dissolves blood clots.

Write the names of enzymes whose deficiency causes albinism and phenyl ketone urea.

Write the name and the structure of the simplest amino acid which can show optical activity.

What do you understand by Zwitter ion?

Write the structure of Zwitter ion formed from alanine.

In the dipeptide Glycylalanine( Gly-ala), which amino acid has a free amino group and which has a free carboxyl group?

Name the derivative of a dipeptide used as a sugar substitute.

Give an example of irreversible protein denaturation.

The sugar which we eat in our everyday life is converted into glucose and fructose. Name the enzyme which facilitates this chemical reaction.

What is the importance of amino acids to us?

What do you mean by peptide bond?

What is renaturation of protein?

Which enzyme regulates the blood sugar level in the body?

What happens when cellulose is heated by dil. H₂SO₄?

Which of the following disaccharides contains a glycosidic linkage between glucose and glucose.

i)Sucrose
ii)Maltose
iii)Lactose

What are the hydrolysis products of
(i) sucrose and (ii) lactose?

What is the action of bromine water on:
(i) glucose, (ii) fructose?

How many hydrogen bond are present between:
(i) A and T
(ii) C and G in a double helix structure?

Give one source and one use of vitamin B₆.

What do the following abbreviations represent?
(a) ala, (b) val, (c) leu, (d) gly.

Consider a double helix. Are the base pairs?

part of the backbone structure
inside the helix
outside the helix

What happens when D-glucose is treated with the following reagents?
Hi.

What happens when D-glucose is treated with the following reagents?
Bromine water

What happens when D-glucose is treated with the following reagents?
HNO₃.

Define the following as related to proteins:
(i) Peptide linkage (ii) Primary structure (iii) Denaturation.

Name the deficiency diseases caused due to lack of the vitamin A, C, E, B₁, B₁₂ B₆and K.