Question

can you give me some notes in fundamental unit of life(cell)

Answer 1

Here are your notes :-

Facts that Matter

• The smallest functional unit of life is cell, discovered by Robert Hooke in 1665. A cell can independently perform all necessary activities to sustain life. Hence cell is the basic unit of life. There are two types of cells → plant cell and animal cell. The different cell organelles and their functions are as follows:

1. Plasma/Cell membrane: This is the outermost covering of the cell that separates the contents of the cell from its external environment. The plasma membrane allows or permits the entry and exit of some materials in and out of the cell so the cell membrane is called a selectively permeable membrane. Some substances like CO2 or O2 gases can move across the cell membrane by a process called diffusion. The movement of water molecules (liquid) through such a selectively permeable membrane is called osmosis. Osmosis is the passage ot water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. If the medium surrounding the cell has a higher water concentration than the cell, the cell will gain water by osmosis. Such a solution is known as hypotonic solution.

If the medium has exactly the same water concentration as the cell, there will be no net movement of water across the cell membrane. Such a solution is known as isotonic solution. If the medium has a lower water concentration then the cell will lose water by osmosis. Such a solution is known as hypertonic solution.

2. Cell wall (Protective wall): Plants cells, in addition to the plasma membrane have another rigid outer covering called cell wall. The cell wall lies outside the plasma membrane.

3. Nucleus (Brain of a cell): The nucleus has a double-layered covering called nuclear membrane. The nuclear membrane has pores which allow the transfer of material from inside the nucleus to its outside, i.e., to the cytoplasm.

4. Cytoplasm: The cytoplasm is the fluid content inside the plasma membrane. It also contains many specialised cell organelles. Each of these organelles performs a specific function for the cell.

5. Cell Organelles: Every cell has a membrane around it to keep its content separate from the external environment. The different components of cell perform different function and these components are called cell organelles.

Answer 2

In a living organism, every things gets initiated from the cell, the basic fundamental unit.

Explanation:

• The smallest unit cell is designed in such a way to fulfill all the basic requirements of living organisms, utilizing its own cell organelles and components.
• A cell is capable of performing the needed biochemical processes essential for survival.
• All the basis survival needs of the living organisms such as breathing (respiration), excretion of waste, digestion of food to generate energy etc., are carried with the help of cells that is the reason the cells are said to be the basic and significant unit of life.  

To learn more:

1. Which cell organelle is key to the life of a cell?:

https://brainly.in/question/363033

2. State the necessary factors for the life of the cell.:

https://brainly.in/question/12207947