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Endocytosis:- It is the process by which cells take up substance from the external environment. In this a vesicle called endocytic vesicles get formed around the foreign substances. It occurs due to both phagocytosis and pinocytosis. In this internal vesicles are formed that are like phagosomes are formed The best known example is formation of food vacuole in amoeba. It is not involved in cell wall formation It involves transportation of macromolecules into the cell. At the end of this process the vesicle fuses with the membrane bound organelles. Exocytosis:- It is the process by which cells give up substance to the external environment. In this the vesicle that is filled with water gets fused with plasma membrane. It occurs due to regulated secretory pathways. The vesicle that is secretory in nature gets formed. The best known example is the hormone release. It is involved in cell wall formation. It is involved in transportation of macromolecules out of the cell. At the end of this process the vesicle gets connected with the cell membrane.
They are all enclosed by a membrane.
Mitochondria...
The organelles known as demolition squads are the lysosomes. They break down waste materials and cellular debris. They are described as the 'stomach' of the cell by some.
Ribosome are organelles which is the center of biological protein synthesis. The organelles create proteins by processing the genetic instructions of cells.
A vesicle. One certain vesicle is a Vacuole. It holds certain minerals and water.
Endocytosis:- It is the process by which cells take up substance from the external environment. In this a vesicle called endocytic vesicles get formed around the foreign substances. It occurs due to both phagocytosis and pinocytosis. In this internal vesicles are formed that are like phagosomes are formed The best known example is formation of food vacuole in amoeba. It is not involved in cell wall formation It involves transportation of macromolecules into the cell. At the end of this process the vesicle fuses with the membrane bound organelles. Exocytosis:- It is the process by which cells give up substance to the external environment. In this the vesicle that is filled with water gets fused with plasma membrane. It occurs due to regulated secretory pathways. The vesicle that is secretory in nature gets formed. The best known example is the hormone release. It is involved in cell wall formation. It is involved in transportation of macromolecules out of the cell. At the end of this process the vesicle gets connected with the cell membrane.
They are all enclosed by a membrane.
The gallbladder is also known as the biliary vesicle or cholecyst, or in latin, the vesica fellea.
Mitochondria...
Lysosomes
The organelles known as demolition squads are the lysosomes. They break down waste materials and cellular debris. They are described as the 'stomach' of the cell by some.
Organelles
Vacuoles
Ribosome are organelles which is the center of biological protein synthesis. The organelles create proteins by processing the genetic instructions of cells.
Specialized cells that have no organelles are known as Prokaryotes.
When in pairs they are known as Centrosomes