Karnataka 1st PUC Biology Chapter 8 Biomolecules Important Questions

Biomolecules is an important chapter in Karnataka 1st PUC Biology that introduces students to the chemical substances found in living organisms and their functions. It explains the structure and role of carbohydrates, proteins, lipids, nucleic acids and enzymes in different biological processes.

Understanding these concepts is essential for learning how cells function and maintain life. Karnataka 1st PUC Biology Chapter 8 Important Questions cover the major topics of the chapter and help students focus their revision.

The questions include important topics such as biomolecule classification, chemical bonds, protein structure, enzyme activity and nucleic acids. Practising them can help students revise key definitions and prepare clear answers for the 2026–27 examination.

Karnataka 1st PUC Important Questions on Biomolecules

Practise the following questions from Chapter 8 Biomolecules to revise the key concepts of the chapter:

1. Which of the following elements is not found in living organisms?

(A) Silicon
(B) Magnesium
(C) Iron 

(D) Sodium 

2. Which of the following is a saturated fatty acid?

(A) Oleic acid
(B) Linoleic acid
(C) Arachidonic acid
(D) Palmitic acid

3. Which of the following is a heteropolymer?

(A) Cellulose
(B) Chitin
(C) Starch
(D) Glycogen

4. Study the given statements and select the correct option.

(i) Carbohydrates, proteins, nucleic acids and lipids are primary metabolites.
(ii) Alkaloids, flavonoids, rubber, etc. are secondary metabolites.
(iii) Linoleic, linolenic and palmitic acids are the three essential fatty acids.

(A) Statements (i) and (ii) are correct.
(B) Statements (i) and (iii) are incorrect.

(C) Statements (i) and (iii) are correct 

(D) Only statement (ii) is incorrect 

These Biomolecules 1st PUC Biology Important Questions cover major concepts from the chapter. While preparing, revise the classification of carbohydrates, the structure of proteins, the functions of lipids and the role of nucleic acids. Also understand how enzymes influence biochemical reactions.

Karnataka 1st PUC Biology Chapter 8 Important Questions PDF

The Karnataka 1st PUC Biology Chapter 8 Important Questions PDF covers key topics from the chapter, helping students revise important concepts and practise exam-oriented questions. It includes questions on major definitions, biological processes, and descriptive topics. 

Students can use this PDF to strengthen their understanding and prepare effectively for the 2026–27 examination. 

You can also practise with the Karnataka 1st PUC Biology model question paper to become familiar with the question format.

How to Prepare for Karnataka 1st PUC Biology Biomolecules

To prepare effectively for Biomolecules, focus on understanding the chemical structures, classifications and functions of different compounds. Follow these steps during your preparation:

• Revise the classification of carbohydrates and learn suitable examples.

• Understand the structure of proteins and the different levels of protein organisation.

• Study the functions and properties of lipids, nucleic acids and enzymes.

• Practise explaining enzyme activity and the factors that influence it.

• Refer to the Karnataka PUC 1 syllabus to review syllabus-related information.

• Solve the Karnataka 1st PUC mid-term question papers with answer keys for additional practice.

• Check the Karnataka 1st PUC exam pattern 2026–27 to understand the examination structure.

Practising Karnataka 1st PUC Biology Biomolecules Important Questions helps students revise the classification, structure and functions of biomolecules. Focus on carbohydrates, proteins, lipids, nucleic acids and enzymes while preparing. 

Solve MCQs and descriptive questions regularly, refer to the official chapter PDF and practise model question papers to strengthen conceptual understanding and prepare effectively for the 2026–27 examination.