Cell – Structure And Function
NIOS · Class 12 · Biology
Summary of Cell – Structure And Function for NIOS Class 12 Biology. Key concepts, important points, and chapter overview.
Interactive on Super Tutor
Studying Cell – Structure And Function? 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 12 students started this chapter today
Overview
The cell is the fundamental unit of life and the basic structural and functional unit of all living organisms. From tiny bacteria to massive organisms like whales, all life forms are composed of cells. Some organisms like bacteria consist of a single cell, while complex organisms like humans are mad
Key Concepts
Formulated by Schleiden and Schwann
Formulated by Schleiden and Schwann in 1838, cell theory consists of three fundamental principles: (1) All organisms are composed of cells, (2) The ce
Prokaryotic cells (found in bacteria) lack
Prokaryotic cells (found in bacteria) lack a membrane-bound nucleus and organelles. They contain a nucleoid region with DNA, 70S ribosomes, single cir
The plasma membrane
The plasma membrane, described by the Fluid Mosaic Model (Singer & Nicholson, 1972), is composed of a lipid bilayer with embedded proteins. Phospholip
Transport mechanisms include
Transport mechanisms include: (1) Diffusion - movement from high to low concentration without energy, (2) Osmosis - movement of water across semiperme
The cell wall is a non
The cell wall is a non-living, rigid layer present outside the plasma membrane in plant cells. It is composed primarily of cellulose with pectin and l
Learning Objectives
- Justify that the cell is the basic structural and functional unit of all organisms
- List the components of the cell and state the cell theory
- Differentiate between prokaryotic and eukaryotic cells
- Differentiate between plant and animal cells
- Illustrate the structure of plant and animal cells by drawing labelled diagrams
Frequently Asked Questions
What are the important topics in Cell – Structure And Function for NIOS Class 12 Biology?
How to score full marks in Cell – Structure And Function — NIOS Class 12 Biology?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Cell – Structure And Function
Important Questions
Practice with board exam-style questions
Syllabus
What topics to cover
Revision Notes
Key points for last-minute revision
Study Plan
Step-by-step plan to ace this chapter
Flashcards
Quick-fire cards for active recall
Formula Sheet
All formulas in one place
Practice Quiz
Test yourself with a quick quiz
Concept Maps
See how topics connect visually
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Cell – Structure And Function chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for NIOS Class 12 Biology.