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Cell Structure
Cell structure and functions
17
Biology
Undergraduate 2
09/13/2009

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Term
Cell Membrane
Definition
controls which substances enter and leave
Term
Cytoplasm
Definition
holds everything in place
Term
Nucleus
Definition
controls the cellular activities
Term
Nuclear Envelope
Definition
separates nuclear material from cytoplasm
Term
Chromatin
Definition
houses genetic info
Term
Golgi Apparatus
Definition
defines, packages, and transports substances
Term
Rough ER
Definition
Synthesize protein and transport
Term
Smooth ER
Definition
synthesize lipid enzymes and transport
Term
Mitochondria
Definition
produce energy, synthesize ATP molecules
Term
Lysosome
Definition
breakdown unwanted substances
Term
Centrioles
Definition
pull apart chromosomes during mitosis
Term
Ribosomes
Definition
synthesize protein
Term
Diffusion
Definition
molecules or ions scatter or spread spontaneously; substances move from higher to lower concentration
Term
Osmosis
Definition
movement of water from higher to lower concentration
Term
Hypertonic
Definition
concentrated solution; cell will shrink
Term
Hypotonic
Definition
Diluted solution; cell will swell
Term
Filtration
Definition
fluid is forced out through semipermeable membrane to seperate solids
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