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20 Cards in this Set
- Front
- Back
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Nucleus
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contains and protects DNA, transcription, partial assembly of ribosomes, splicing
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Mitochondria
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Produce ATP via Krebs, oxidative phosphorylation
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Ribosomes
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synthesize proteins
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Rough Endoplasmic Reticulum
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synthesis and modification of secretory membrane bound and organelle proteins
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Smooth Endoplsmic reticulum
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detoxification and glycogen breakdown in liver, steroid synthesis in gonads
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Golgi Apparatus
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modification and sorting of protein, some synthesis
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Lysosomes
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contain acid hydrolases which digest various substances
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Peroxisomes
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metabolize lipids and toxins using peroxide
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What can cross lipid bilayer?
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nonpolar, small uncharged polar molecules
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What cant cross lipid bilayer?
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large polar and charged molecules
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Passive transport
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moves down concentration gradient, doenst require energy
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Active transport
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moves against concentration gradient, requires cellular energy
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Diffusion
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Movement of a substance from higher to lower concentration
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Osmosis
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diffusion of water, water always moves towards higher concentration of solute
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Facilitated diffusion
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Transport proteins moving solute along concentration gradient
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Uniports
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transport one molecule across membrane at a time
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Symports
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carry two substances across membbrane in same direction
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Antiports
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carry two substances in opposite directions
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Primary active transport
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driven by ATP hydrolysis
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Secondary active transport
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not coupled directly to ATP, but to ion gradients
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