Term
| Plasma membrane- Structure and function |
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Definition
Bilayer of phospholid and protein molecules
maintain integreity of cell- controlls passage of materials into and out of cell |
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Term
| Cytoplasm structure and function |
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Definition
Water, dissolved ions and nutrients
medium for chemical reactions, suspending medium for organelles |
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Term
| Nucleus, structure and function |
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Definition
Spherical body near center ofcell, enclosed in a membrane
contains genetic material, regulates activities of cell |
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Term
| Nuclear membrane structure and function |
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Definition
double layered membrane around nucleus
Seperates cytoplasm from neuroplasm, pores allow passage pf material as necessary |
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Term
| chromatin structure and function |
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Definition
Strand of DNA in nucleus
genetic material of cell, becomes chromosones during cell division |
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Term
| Nucleolus structure and function |
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Definition
| Dense, nonmembranous body in nucleus, composed of rna and protein molecules |
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Term
| Mitochondria structure and function |
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Definition
Rod shaped bodies enclosed by a doyble layered membrane in cytoplasm, folds of inner membrane from cristae
major site of atp synthesis, converts energy from nutrients into a form that is usable by body |
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Term
| Ribosomes structure and function |
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Definition
granules of RNA in cytoplasm
protein synthesis |
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Term
| endoplasmic reticulum structure and function |
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Definition
interconnected membranous channels and sacs in cytoplasm
transports material through cytoplasm, rough endoplasmic reticulum aids in synthesis of protein, smooth endo plasmic reticulum is involved in lipid synthesis |
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Term
| Golgi apparatus structure and function |
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Definition
group of flattened membranous sacs usually near nucleus
packages products for secretion, forms lysosomes |
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Term
| lysosomes structure and function |
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Definition
membranous sacs of digestive enzymes in cytoplasm
digest material taken into cell, debris from damaged cells nd worn out cell components |
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Term
| cytoskeleton structure and function |
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Definition
protein microfilaments and microtubles in cytoplasm
provides support for cytoplasm |
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Term
| centroles structure and function |
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Definition
| pair of rod shaped bodies composed of microtubules, located near nucleus at right angles to each other |
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Term
| cilia structure and function |
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Definition
membrane enclosed bundles of microtubules that extend outward from cell membrane, short and numerous
move subtance across surface of cell |
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Term
| flagella structure and function |
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Definition
similar to cillia except usually long and single
cell locomotion |
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