Question :-
Describe the function of the following :-
• Cell wall
• Cell membrane
• Nucleus
• Ribosomes
• Lysosomes
Answers
Answer:
Ribosome:
Ribosomes, which are also known as protein synthesizers, found in the eukaryotic and prokaryotic cells which means they are found in both animal and plant cells. They make proteins from amino acids by a process called protein synthesis or translation. Ribosomes can be found freely suspended in the cytoplasm or attached to the endoplasmic reticulum to form the rough endoplasmic reticulum.
It is made of RNAs and proteins and is composed of two subunits locking together: a small and a large unit. Each unit has its own specific functions, e.g. the small unit reads or decodes the mRNA (messenger RNA) while the larger subunit facilitates the linkage of amino acid precursors to form a polypeptide chain as specified by the mRNA during a process called "translation". Both the subunits are made of proteins and RNA components and joined by interactions between the rRNAs of one subunit and proteins of another subunit.
Explanation:
Lysosome:
Lysosome is a membrane-bound organelle which is found in almost all animal cells. These cell organelles are evenly distributed in the cytoplasm of the cell. They look like tiny sacs which contain hydrolytic enzymes which can break down various biomolecules or process nutrients. They also perform autolysis, a process to destroy the dead cells.
Lysosome functions as the digestive system of the cell as it degrades material which enters into the cell from outside as well as digests obsolete components of the cell. They contain an ionic pump that helps them maintaining highly acidic pH inside lysosomes. This organelle was discovered by a Belgian cytologist Christian de Duve.
nucleus :
This organelle has two major functions: it stores the cell's hereditary material, or DNA, and it coordinates the cell's activities, which include growth, intermediary metabolism, protein synthesis, and reproduction (cell division). Only the cells of advanced organisms, known as eukaryotes, have a nucleus.
cell membrane :
The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
cell wall:
cell wall. The cell wall is the protective, semi-permeable outer layer of a plant cell. A major function of the cell wall is to give the cell strength and structure, and to filter molecules that pass in and out of the cell.
FUNCTION OF CELL WALL :-
In the 1st Image
FUNCTION OF CELL MEMBRANE :-
In the 2nd image
FUNCTION OF NUCLEUS :-
In the 3rd image
FUNCTION OF RIBOSOMES :-
In the 4th image
FUNCTION OF LYSOSOMES :-
In the 5th image
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