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23 Cards in this Set
- Front
- Back
osmosis |
the movement of water molecules through a selectively permeable membrane |
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diffusion |
the movement of molecules from a higher concentration to a lower concentration |
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cell theory |
a scientific theory which describes the properties of cells |
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cell membrane |
holds contents of cell in place and acts like a gatekeeper by controlling what enters and leaves cell |
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endoplasmic reticulum |
carries materials through cytoplasm
rough: ribosomes smooth: no ribosomes |
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Golgi apparatus |
stores protein and puts them into packages |
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lysosomes |
formed by Golgi to patrol and clean cytoplasm, contains proteins used to break down large molecules |
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mitochondrion |
power plant of cell; provides energy |
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ribosome |
uses info from nucleus and molecules from cytoplasm to produce protein |
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nucleus |
control centre; directs all cell activities |
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cytoplasm |
a watery fluid that contains everything inside cell membrane |
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vacuole |
used to store water and nutrients, also to move out waste and excess water out of cell |
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nucleolus |
makes ribosomal subunits from protein and ribosomal |
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chromosomes |
contains DNA info that holds construction plans of cell |
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flagellum/cilia |
a whip like tail that helps cell move |
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cell wall |
protects and supports plant cell (plant) |
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chloroplast |
creates chlorophyll which helps make cell food (plant) |
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prokaryotic cells |
one-celled organisms (eg. bacteria); when the nucleus isn't surrounded by a membrane |
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eukaryotic cells |
plant/animal cells; cells with a nuclear membrane |
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turgor pressure |
the pressure created inside plant cells when water molecules enter cell by osmosis; water fills vacuoles & cytoplasm, causing them to swell up and push against cell wall |
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concentration of solute molecules outside cell is equal to concentration of solute molecule inside cell • water molecules balanced inside and outside cell • size & shape remain same |
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concentration of solutes outside cell is less than found inside cell. • water molecules greater outside than inside cell • move water moving in • cell expands |
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Front (Term)
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concentration of solutes outside cell is greater than found inside cell • water is greater inside cell than outside • water moving out • cell decreases • dying |