Active Transport

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Written in black is the tittle Written in red are the topics Written in orange are the subheadings Written in green are the details Written in blue are the examples

Active Transport

What Is Exocytosis

The chemicals are protein that travel through the bloodstream to other cells of the body

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The proteins are packaged by the Golgi apparatus

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A vacuole containing waste fuses with the cell membrane and releases its contents into the outside environment

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Also play roles in biological processes

For example, cells in our body release helpful chemicals into your bloodstream using Exocytosis

Recall that in addition to storing nutrients and water, vacuoles store wastes

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A cell may need to move non-dissolved particles, or large amounts of material from its cytoplasm to the outside environment

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Exocytosis is the reverse of Endocytosis

What Is Endocytosis?

Then it can move to the organelle where it can be used

Then the pocket of membrane closes and forms a vesicle

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Once a molecule is encountered by the cell, the cell’s plasma membrane folds inwards surrounding the material forming a pocket

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There are many reasons that a cell require a process like Endocytosis: absorbing essential nutrients from the extracellular fluid, consuming entire microorganism, transporting dead or dying cells to where they can be eliminated

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Cells in our body take up molecules from the extracellular fluid

when bubbles on top of water collide, the smaller bubbles often consumed or swallowed up by the larger ones

Pinocystosis

This form is important because it can transport extracellular liquid through the cell without affecting the cytoplasm

Similar to Phagocytosis, the plasma membrane of the cell extends to form a pocket or bud then closes the pocket

This forms a vesicle within the cell which is then pinched off and can be removed to other areas of the cell in the cytosol

This occurs in every type of cell

This process is also called cell drinking

Phagocytosis

The unwanted material can be broken down into simple, usable molecules, or discarded from the body as waste

It can consume unwanted bacteria

Viruses, pieces of dust, foreign particles

Can happen in many cells including Amoeba and white blood cells

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For Example, when a white blood cell is sent to the site of inflammation or infection

When certain types of cells consume an entire other cell or macromolecule

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