AP Bio Midterm Essay Questions

question

Osmosis
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diffusion of water from high to low concentration,
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Osmosis
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controls what goes in and out of cell through semipermeable membrane,
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Osmosis
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swells when water enters
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Osmosis
answer

brings cell to healthy state
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Facilitated Diffusion
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Polar molecules and ions impeded by the lipid bilayer,
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Facilitated Diffusion
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no energy used
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Facilitated Diffusion
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helps carry carbs out of the cell
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Endocytosis
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taking molecules by forming new vesicles
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Endocytosis
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phago- large transported particles
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Endocytosis
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Phino- absorbs extracellular fluid
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Endocytosis
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R-M endo- enables cell to acquire specific substances
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Exocytosis
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expells waste by a vesticle requiring energy
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Active Transport
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movement against opposing force
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Active Transport
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helps cell to maintain internal conditions
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Active Transport
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transport proteins help move molecules across the cell membrane, ex: Na +/K + pump
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2a
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Phospholipids are amphipathic
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2a
answer

proteins in membranes can move
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2a
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hard for hydrophilic to diffuse through membrane
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2b
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Add phosphate group ADP – ATP
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2b
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cellular respiration occcurs, enzymes create protein gradient
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2b
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membranes help with breaking down and making ATP

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