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Tools and Techniques — Chapter Summary

CBSE · Class 11 · Biotechnology

Summary of Tools and Techniques for CBSE Class 11 Biotechnology. Part of the CBSE Class 11 Biotechnology syllabus.

90 questions108 flashcards2 formulas & key relations5 concepts

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Overview

Tools and techniques in biotechnology provide the practical methods needed to observe cells, separate biomolecules, measure reactions, identify genes, sequence DNA, and study cells in large numbers. Microscopy reveals structures too small for the naked eye, centrifugation separates particles by dens

Key Concepts

Microscopy increases the visible size

Microscopy increases the visible size of very small objects. Bright field microscopy uses light for illumination and usually needs stains. Dark field

Magnification is the increase in retinal

Magnification is the increase in retinal image size. Total magnification of a compound microscope equals objective magnification multiplied by eyepiec

Centrifugation separates particles under the influence

Centrifugation separates particles under the influence of centrifugal force. Differential centrifugation separates particles with different size and d

Electrophoresis separates charged molecules under

Electrophoresis separates charged molecules under an electric field. DNA, RNA, peptides, and proteins move according to charge and size. Mobility is i

Bromophenol blue is a common tracking

Bromophenol blue is a common tracking dye, coloured at alkaline and neutral pH, and highly mobile. Xylene cyanol has lower mobility, while Orange G ha

Learning Objectives

  • Understand the major laboratory tools used in biotechnology
  • Distinguish between different forms of microscopy and their uses
  • Explain how centrifugation separates cellular components
  • Describe the principle of electrophoresis and its main types
  • Compare the four types of ELISA

Frequently Asked Questions

What are the important topics in Tools and Techniques for CBSE Class 11 Biotechnology?
Key topics in Tools and Techniques include Microscopy, Centrifugation, Electrophoresis, ELISA. Study these first, then practise questions on each for Class 11 exams.
How should I revise Tools and Techniques for Class 11 exams?
Learn the core ideas first, then work through the 90 practice questions on Tools and Techniques. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Tools and Techniques

All CBSE Class 11 Biotechnology Chapter Summary

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