Organelles In Cell

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Organelles in the Cell

Cells are the smallest structural unit of all organs and organ systems. They are essential to life. Both animal species and plant species need cells to maintain life. Cells have many and are made up of many organelles that have specific jobs. Animal and plants cells are different, but mainly composed of the same things. Each organelle is significant to its cell, which are the building blocks of life. At the center of almost every cell is a dense organelle called the Nucleus. It contains the cell's genetic material and usually has a double membrane. The double membrane that protects the nucleus is similar to the thin single membrane made up of proteins and lipids. The membrane controls the passing of substances entering
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Similarly, peroxisomes degrades toxic compounds. Another small organelle is Ribosomes. RNA is used to synthesize proteins and can be found in the large number of Ribosomes. Endoplasmic Reticulum is involved in the transport of many materials. ER is made of two different types, smooth and rough. Centrosomes are also present and they contain important spindle fibers which develop during the process of cell division.

Main Functions:
Endoplasmic Reticulum- a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface (smooth endoplasmic reticulum) or studded with ribosomes (rough endoplasmic reticulum) involved in the transport of materials.
Nucleus- a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material (Contains: nuclear pore, nucleolus, nucleoplasm, and nuclear envelope)
Golgi Apparatus- a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular
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Also, responsible for the breaking down of fatty acids by beta-oxidation, excess purines to urea, and toxic compounds (ex: eliminates drugs and toxins from the liver and kidneys)
Secretory Vesicle- vesicles that mediate the vesicular transport of cargo from an organelle to specific sites at the cell membrane, where it docks and fuses to release its content (ex: hormones or neurotransmitters)
Ribosomes- a minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins
Cytoplasm- The jellylike material that makes up much of a cell inside the cell membrane, and, in eukaryotic cells, surrounds the nucleus. The organelles of eukaryotic cells, such as mitochondria, the endoplasmic reticulum, and (in green plants) chloroplasts, are contained in the cytoplasm.
Cilium- a short, microscopic, hairlike vibrating structure. Cilia occur in large numbers on the surface of certain cells, either causing currents in the surrounding fluid, or, in some protozoans and other small organisms, providing

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