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RachelDoherty Cells (Organelles (Ribosomes (Dense Particles, Free or…
RachelDoherty Cells
Organelles
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Golgi Apparatus
Receive proteins from ER; sorts and modifies for: 1.Export 2. Plasma membrane growth 3. Creation of Lysosomes
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Nucleus
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Nuclear Envelope
Separates the nucleoplasm from the cytoplasm and regulates passage of substances to and from nucleus
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Membrane Transport
Simple Diffusion
Small uncharged molecules such as O2, CO2 and fat-soluble molecules pass down their concentration gradient
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Faciliated Diffusion
An integral protein that spans the plasma membrane enables the passage of a particular solute across the membrane
Active Transport
Some transport proteins use ATP as an energy source to actively pump substances across the plasma membrane against their concentration gradient.
Endocytosis
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Phagocytosis
Engulfs an entire cell- or cell debris, as well as pathogens
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Cytoplasm
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~Contains fluid cytosol containing dissolved solutes, inclusions (stored nutrients & pigment granules) and organelles
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Exocytosis
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~Accounts for most secretion processes, such as the release of mucus or protein hormones from the gland cells of the body