Eukaryotic Cells

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Match the organelles to their functions

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Peroxisomes (The Personal Trainer)

Plasma Membrane (The M25)

Rough ER

Smooth ER

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All living cells have a plasma membrane that encloses their contents. In prokaryotes, the membrane is the inner layer of protection surrounded by a rigid cell wall. Eukaryotic animal cells have only the membrane to contain and protect their contents. These membranes also regulate the passage of molecules in and out of the cells. They are composed of lipids (mainly phospholipids), proteins and carbohydrates (attached to the phospholipids and proteins).

Peroxisomes absorb nutrients that the cell has acquired. They are very well known for digesting fatty acids. They also play a part in the way organisms digest alcohol (ethanol). Because they do that job, you would expect liver cells to have more peroxisomes than most other cells in a human body.

- Has bound ribosomes attached, which secrete proteins into the cisternal space - Proteins produced here are destined for excretion from the cell or for attachment to the cell membrane - New proteins made at the rER are folded and processed (eg sugar chains added). - They are transported from the ER to the Golgi apparatus in vesicles.

- Within the cisternae (the cavities) of the smooth ER: - Lipids (including steroids) are made - Carbohydrates are broken down - Poisons may be detoxified - Calcium is stored


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