Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
Cell membrane- functions of membrane proteins |
attach cytoskeletal filaments to cell membrane attach cells to extracellular matrix transport molecules in and out of cell acts as receptors for cell signalling enzymatic activity |
|
|
types of endocytic vesicles |
clatrhin coated- 100-150 nm, involves receptor mediated endocytosis uncoated vesicles, 100 nm caveolae, 50 nm, has high binding affinity to cholesterol, common in capillary endothelials phagosomes, large, formed from phagocytosis in phagocytes |
|
|
functions of rER |
have ribosomes attached for protein synthesis |
|
|
functions of sER |
lipid metabolism and detox in hepatocytes steroid hormone production in leydig cells in testis calcium storage and release in muscle cells (as sarcoplasmic reticulum) |
|
|
functions of golgi |
modification + packaging of proteins from rER formation of primary lysosomes recycling of cell membrane through endocytosis |
|
|
mitochondrial DNA is... |
circular, derived solely from mother |
|
|
types of cytoskeleton |
microfilaments (5 nm), intermediate filaments (10 nm) and microtubules (25 nm) |
|
|
functions of microfilaments |
enables cell crawling and cell signaling actin interacts with myosin to generate motile forces |
|
|
functions of intermediate filaments |
organise internal 3D structure of cells, anchors organelles serves as structural components to the nuclear lamina and sarcomeres to provide mechanical support found in some cell-cell/cell-matrix junctions to keep cells intact and together despite stretching |
|
|
types of intermediate filaments |
tonofilaments (keratins) in epithelial cells desmin filaments in muscle cells vimentin in fibroblasts neurofilaments in neurones glial filaments in glial cells nuclear lamina in the nucleus |
|
|
functions of microtubules |
maintains cell structure involved in network formation of endoplasmic reticulum fors axoneme of cilia and flagella for cell movement provides platform for intracelllular transport of organelles, vesicles, chromosomes and pigments |
