Fundamental Unit of Life - Plasma Membrane : Chapter 5 NOTES Class 9

Описание: FUNDAMENTAL UNIT OF LIFE || CLASS 9 SCIENCE- FULL CHAPTER, TARGET 95+,
CLASS 9 SCIENCE CHAPTER 5, NUCLEUS, CELL ORGANELLES, MITOCHONDRIA, ENDOPLASMIC RETICULLUM, GOLGI APPARATUS, STRUCTURE AND FUNCTION, VACUOLES, PLASTIDS, OSMOSIS, DIFFUSION
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Mathematics class9
1 Exercise 1.1 and 1.2 Mathematics    • Exercise 1.1 and 1.2 Number System Class 9...  
2 Exercise 1.3 and 1.4 Mathematics    • Exercise 1.3 and 1.4 Number System Class 9...  
3 Exercise 1.5 and 1.6 Mathematics    • Exercise 1.5 and 1.6 Number System Class 9...  
4 Exercise 2.1 and 2.2 Mathematics
   • Exercise 2.1 and 2.2 #Class9 chapter 2 #Po...  
5 Exercise 2.3 and 2.4 Mathematics
   • Exercise 2.3 and 2.4 #Class9th chapter 2 #...  
6 Exercise 2.5 Mathematics
   • Exercise 2.5 #Class9th chapter 2 #Polynomi...  

Physics class 9
1 Motion Class 9th    • MOTION FULL CHAPTER || CLASS 9 NOTES CBSE ...  
2. Force and laws of Motion Class 9th
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3 Gravitation Class 9th
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4 Work and Energy Class 9th
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Chemistry class 9
1 Matter in our Surrounding 9th
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2 Is matter around us pure 9th
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3 Atoms and Molecules 9th
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4 Structure of the Atom. 9th
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Biology class 9
1 Why do we fall ill 9th    • WHY DO WE FALL ILL? CLASS 9 || NOTES CBSE ...  
2 Fundamental unit of life /Cell 9th    • Fundamental Unit of Life - Plasma Membrane...  


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Cell

The body of all organisms is made up of very small units called cell.
Cells are a fundamental unit of life.

The cell is capable of independent existence and can carry out all the functions which are necessary for a living being. Unicellular organisms are capable of independent existence which shows a cell’s capability to existing independently unit of living organisms and the basic unit of life.

Cell structures
The cell is composed of some basic structures.

Plasma Membrane
The plasma membrane is the covering of the cell that separates the contents of the cell from its external environment.
It is a living part of the cell. It is very thin, delicate, elastic and selectively permeable membrane. The plasma membrane is composed of lipid and protein.

Function:
As it is a selectively permeable membrane, it allows the flow of limited substances in and out of the cell.

Transport of substances through the plasma membrane
The substance can pass through the plasma membrane by two processes:

1) Diffusion
2) Osmosis

Diffusion:
It is the process in which a solid, liquid or gas moves from a region of high concentration to region of low concentration.

Osmosis:
Osmosis is the movement of water from high concentration to low concentration through the semipermeable membrane.

Fundamental unit of life, cell theory, types of cells, prokaryotic cell, eukaryotic cell, plant cell, animal cell, cell structure, plasma membrane, cell wall, protoplasm, Golgi bodies, ribosomes, mitochondria, centrioles, plastids, lysosomes, vacuoles, endoplasmic reticulum, nucleus, transport through plasma membrane, diffusion, osmosis, important points of cell.