ii.
Bound Ribosomes: Bound to the ER membrane.
5. Endoplasmic Reticulum (ER)
ER is a collection of flattened sacs in cytoplasm that facilitate protein and lipid synthesis. 2 types of ER:
i) Smooth/Agranular - does not synthesize proteins due to a lack of Ribosomes. It synthesizes FA’s, steroids, inactivates and detoxifies drugs, stores and releases Ca++ (Calcium) ions that trigger muscle contraction.
ii) Rough/Granular : -contains Ribosomes and is responsible for protein synthesis. Proteins enter the ER and are sorted and processed
6. Golgi Complex
The Golgi complex is a series of flattened sacs lying close to the nucleus of the cell. They are responsible for the modification, sorting and packaging of proteins from the rough ER, for transport to different destinations.
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