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Parts of a Cell

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A series of free High School Biology Videos and Lessons.
Ribosomes, Endoplasmic Reticulum, Golgi Apparatus, Mitochondrion.

Ribosomes are responsible for synthesizing proteins. This process is also known as translation and occurs after transcription. Ribosomes read as they move along the messenger RNA template that is used to copy a particular DNA sequence and produce an amino acid chain.
Endoplasmic Reticulum
The endoplasmic reticulum is an organelle in which an array of cell functions takes place, notably including the production of proteins, steroids and lipids. Proteins are formed in ribosomes, found in the rough endoplasmic reticulum. Steroids and lipids are formed in the smooth endoplasmic reticulum.
Definition and functions of the endoplasmic reticulum.

Golgi Apparatus
The Golgi apparatus, also known as the Golgi body or Golgi complex, is an organelle commonly found in eukaryotic cells. The Golgi apparatus is made up of membrane-bound stacks and is responsible for the production of lysosomes, which aid in digestion.
The description of Golgi Apparatus.
Mitochondria (singular mitochondrion), are organelles in which aerobic cellular respiration takes place found in eukaryotic cells . Mitochondria generate ATP which cells use for energy and have both an outer and inner membrane. The folds of the inner membrane are called the cristae (singular crista), while the viscous fluid held in the space inside the inner membrane is called the matrix.
The structure of mitochondria.

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