Write the structure and functions of any 2 organelles
Answers
Answer:
An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. Among the more important cell organelles are the nuclei, which store genetic information; mitochondria, which produce chemical energy; and ribosomes, which assemble proteins.
PLASMA MEMBRANE:-
Structurally, it consists of a phospholipid bilayer along with two types of proteins viz. embedded proteins and peripheral proteins that function in providing shape and allowing the movement of particles in and out of the cell.
The cell membrane provides mechanical support that facilities the shape of the cell while enclosing the cell and its components from the external environment.
It regulates what can be allowed to enter and exit the cell through channels, acting as a semi-permeable membrane, which facilities the exchange of essential compounds required for the survival of the cell.
CELL WALL:-
In a plant cell, the cell wall is made up of cellulose, hemicellulose, and proteins while in a fungal cell, it is composed of chitin.
A cell wall is multilayered with a middle lamina, a primary cell wall, and a secondary cell wall.
The critical function of the cell wall is protecting and maintaining the shape of the cell. It also helps the cell withstand the turgor pressure of the cell.
It initiates cell division by providing signals to the cell and allows the passage of some molecules into the cell while blocking others.
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