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The Cell Chapters 6,7,11&12
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Features of all cells Plasma membrane Nucleoid or nucleus Cytoplasm
Transport proteins Receptor proteins Markers Nucleoid or nucleus Cytoplasm
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Cell size
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Cell type
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Eukaryotes Plasma membrane Nucleus Endoplasmic reticulum Golgi bodies
Lysosomes Mitochondria Cytoskeleton Centrioles Peroxisomes
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Plant cells
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Endosymbiosis Eukaryotic organelles evolved
Mitochondria and chloroplasts
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Cell membrane Plasma membrane Phospholipids Transmembrane proteins
Interior protein network Cell surface markers
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Cell membrane
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Cell membrane
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Proteins
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Movement across membrane
1. Passive transport Diffusion Osmosis Facilitated diffusion (carriers) 2. Bulk transport Exocytosis Endocytosis 3. 3. Active transport Requires energy Na-K pump
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Solutions Hypertonic Hypotonic Isotonic Hyperosmotic Hypoosmotic
Isosmotic Osmoregulation is the control of water balance
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Cell communication Types of cell signaling 1. Direct contact
2. Paracrine Short lived signals Chemicals extracellular fluid 3. Endocrine blood stream hormones 4. Synaptic Neurotransmitters
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Intracellular response
Second messengers Relay messages from receptor to target cells Two examples Cyclic AMP (cAMP) & Calcium ions
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