Organelles
Páginas: 3 (527 palabras)
Publicado: 10 de marzo de 2013
ORGANELLES
Cell Organelles and Their Functions
A typical cell is made up of a cell membrane that contains a nucleus, within a jellylike substance called cytoplasm, which holds together theorganelles. The following are the organelles and their functions in an animal cell.
Nucleus
This is often referred to as the 'brain' of the cell. Nucleus functions control all other activities thatare carried on within the cell. The nucleus consists of a nuclear membrane, chromatins and a nucleolus, it also contains among other things, chromosomes. There may be one or more nuclei in a cell; anucleus is absent in prokaryotic cells.
Cell Membrane
Gives structure and shape to the cell and is responsible for holding the organelles together. The cell membrane function includes providingprotection and it is selectively permeable in nature, since it has the ability to control what enters and leaves the cell.
Endoplasmic Reticulum
This is a network of tubes, sacs and membranes,responsible for transporting material from one part of the cell to another. There are two types of endoplasmic reticulum; rough endoplasmic reticulum (lined with ribosomes) and smooth endoplasmic reticulum(lacking ribosomes/embedded ribosomes).
Ribosome
Ribosomes are thousands of tiny spherical structures that are made of RNA and protein enzymes. Ribosomes function includes helping out in proteinsynthesis process.
Mitochondria
Also referred to as the 'Powerhouse' of the cell. Mitochondria is made up of a double layered membrane, the inner part of which consists of folds, called cristae.They are responsible for the breakdown of sugar molecules to release ATP (adenosine triphosphate), which is used to transport energy within the cell for metabolism.
Golgi Apparatus
Made up ofnumerous layers which form a sac like structure. Golgi apparatus functions include protein packaging and its distribution to other parts of the cell.
Centrioles
Centrioles lie near the nucleus and...
Cell Organelles and Their Functions
A typical cell is made up of a cell membrane that contains a nucleus, within a jellylike substance called cytoplasm, which holds together theorganelles. The following are the organelles and their functions in an animal cell.
Nucleus
This is often referred to as the 'brain' of the cell. Nucleus functions control all other activities thatare carried on within the cell. The nucleus consists of a nuclear membrane, chromatins and a nucleolus, it also contains among other things, chromosomes. There may be one or more nuclei in a cell; anucleus is absent in prokaryotic cells.
Cell Membrane
Gives structure and shape to the cell and is responsible for holding the organelles together. The cell membrane function includes providingprotection and it is selectively permeable in nature, since it has the ability to control what enters and leaves the cell.
Endoplasmic Reticulum
This is a network of tubes, sacs and membranes,responsible for transporting material from one part of the cell to another. There are two types of endoplasmic reticulum; rough endoplasmic reticulum (lined with ribosomes) and smooth endoplasmic reticulum(lacking ribosomes/embedded ribosomes).
Ribosome
Ribosomes are thousands of tiny spherical structures that are made of RNA and protein enzymes. Ribosomes function includes helping out in proteinsynthesis process.
Mitochondria
Also referred to as the 'Powerhouse' of the cell. Mitochondria is made up of a double layered membrane, the inner part of which consists of folds, called cristae.They are responsible for the breakdown of sugar molecules to release ATP (adenosine triphosphate), which is used to transport energy within the cell for metabolism.
Golgi Apparatus
Made up ofnumerous layers which form a sac like structure. Golgi apparatus functions include protein packaging and its distribution to other parts of the cell.
Centrioles
Centrioles lie near the nucleus and...
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