Enzymes and Bioenergetics
CBSE · Class 11 · Biotechnology
Summary of Enzymes and Bioenergetics for CBSE Class 11 Biotechnology. Key concepts, important points, and chapter overview.
Interactive on Super Tutor
Studying Enzymes and Bioenergetics? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for chapter summary and more.
1,000+ Class 11 students started this chapter today
Overview
Enzymes are highly specific biocatalysts that speed up biochemical reactions in living systems without being used up. Most enzymes are proteins, while ribozymes are the small exception made of catalytic RNA. Their action depends on active sites, cofactors, temperature, pH, and substrate concentratio
Key Concepts
Enzymes catalyse biochemical reactions both
Enzymes catalyse biochemical reactions both in vivo and in vitro. They have great catalytic power and are highly specific for substrates. Their molecu
All enzymes are proteins except
All enzymes are proteins except a small group of catalytic RNA molecules called ribozymes.
Many enzymes need cofactors for activity
Many enzymes need cofactors for activity. A cofactor may be a coenzyme or a metal ion. The protein part alone is the apoenzyme, and the complete activ
Enzymes are classified into seven classes
Enzymes are classified into seven classes based on the reaction they catalyse: oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases,
Isozymes are multiple molecular forms
Isozymes are multiple molecular forms of the same enzyme present in the same species, tissue, or cell. They catalyse the same reaction but may differ
Learning Objectives
- Understand the nature, properties, and structure-related behaviour of enzymes
- Learn enzyme classification by the International Union of Biochemistry system
- Explain enzyme specificity, active site function, and the lock and key and induced fit models
- Describe how temperature, pH, and substrate concentration affect enzyme activity
- Interpret Michaelis-Menten kinetics and the meaning of Km and Vmax
Frequently Asked Questions
What are the important topics in Enzymes and Bioenergetics for CBSE Class 11 Biotechnology?
How to score full marks in Enzymes and Bioenergetics — CBSE Class 11 Biotechnology?
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Enzymes and Bioenergetics
Practice Quiz
Test yourself with a quick quiz
Important Questions
Practice with board exam-style questions
Revision Notes
Key points for last-minute revision
Formula Sheet
All formulas in one place
Concept Maps
See how topics connect visually
Study Plan
Step-by-step plan to ace this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Enzymes and Bioenergetics chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 11 Biotechnology.