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Cell Structures Lab Notes

Cell Structures Lab Notes - Daphnia Hydra Stentor Rotifer...

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ulates at lower end ( cytopharynx ) food vacuole envelops food particles, then migrates to/empties contents in anal pore riefly reverse direction) e fcns.) yta (both plant and animal characteristics) etic; somewhat heterotrophic (ingest food thru phagocytosis) elastic protein layer inside membrane (no cell wall) g flagella espot) = light-sensitive, contains carotenoids (pigments) eus , contractile vacuole , chloroplasts = small sugar-storing organelles, go w/ chloroplasts al reproduction algae representative) ells gellate ; interconnected by cytoplasmic strands mucilaginous layer duction (sexual or asexual); produce daughter colonies, release when parent bursts ll , chloroplasts (abundant); nucleus maybe; vacuoles take up rest of space ment of chloroplasts LAB NOTES— Cell Structures Paramecium Euglena
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Volvox
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Elodea Human Epithelial Cells easy to obtain, form protective layer (cells packed together tightly) prominent nuclei Pond Water microscopic life can be seen year-round
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Unformatted text preview: Daphnia: Hydra: Stentor: Rotifer: Cell Motility • cilia = tiny hair-like structures made of microtubules o often cover entire cell surfaces (ex: Paramecium) o used for locomotion, moving food, etc (more purposes in multicelled orgs.) • flagella = made of microtubules, long and beat in wavelike manner o cells have one (ex: Euglena) or several (ex: Volvox) o used for propulsion o prokaryotic: spin instead of beating • pseudopod = “false feet” made of microtubules; ex: Amoeba o fcn like a snail moves (extends, then pulls body along) o can envelop prey in phagocytosis Plasmolysis • cellular shrinkage occurring bc of cell being exposed to hypertonic solution • water potential in hypotonic cell is >, so H 2 O flows out of central vacuole contents of cell shrink • opposite: cell expands due to extracellular fluid when placed in hypotonic sol....
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