Bio Final: Unit 2 - Bio Final Unit 2-surface area volume = HIGH allows many processes to occur in the cell as it needs space to do so Prokaryote Smaller

Bio Final: Unit 2 - Bio Final Unit 2-surface area volume =...

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Bio Final: Unit 2 -surface area : volume = HIGH - allows many processes to occur in the cell as it needs space to do so Prokaryote - Smaller than eukaryotic - Cytoplasm - Nucleoid : one continuous, circular DNA molecule - Cell wall - Plasma membrane - Ribosomes - Flagella - No membrane-bound organelles Eukaryote - Plasma membrane: phospholipids + proteins - Hydrophobic tails (inwards) - Hydrophilic heads (outwards) Vacuoles - Store food, wastes, salts, or pigments Peroxisomes - Detoxify various substances = hydrogen peroxide as a byproduct Cytoskeleton - Has microtubules + microfilaments that hold cell together Cilia and Flagella - Beating motion propel organism through watery environments Plant vs Animal Cells Plants - Cell wall, chloroplasts - Vacuole takes up most of space Transport: The Traffic Across Membranes Plasma Membrane - Phospholipid, lipid-soluble 2 Factors
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1. Semipermeability of membrane 2. Size + charge of particles Passive Transport 1. Simple diffusion 2. Facilitated diffusion Osmosis - Water wants to go less solute → more solute
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