Osmosis Test Flashcards
these cells live everywhere
prokaryotes
prokaryote
unicellular, very small, no membrane bound organelles, naked DNA
eukaryote
unicellular/multicellular, larger, nucleus, ribosomes, membrane bound organelles
found in plants, animal, fungi, protists
eukaryotes
plant cells
no cell membrane, cell well, chloroplasts, central vacuole
animal cells
cell membrane, lysosome, centrioles
small cell radius?
1 unit
large cell radius?
10 units
SA of small cell?
12.57 units2
SA of large cell?
1257 units2
volume of small cell?
4.189 units3
volume of large cell?
4189 units3
as a cell gets larger, its volume…
increases at a faster rate than its surface area
chloroplasts
photosynthetic bacterium
mitochondria
aerobic bacterium
organelles in endomembrane system
nuclear membrane,endoplasmic reticulum,Golgi apparatus, lysosomes, vesicles, endosomes and cell membrane
fluid mosaic model
globular proteins are inserted into the phospholipid bilayer (NP facing in and Polar facing out)
diffusion
movement from high to low concentration, passive transportation, no energy needed
facilitated diffusion
diffusion through protein channels or carriers (with help), no energy needed
osmosis
diffusion of water from high to low concentration
sodium potassium pump
uses ATP to pump 3 sodium ions out of the cell and 2 potassium ions into the cell
endocytosis
plasma membrane envelops food particles
exocytosis
discharge of material from vesicles at cell surface
hypotonic
lower concentration, more water; burst/turgid
hypertonic
higher concentration, less water; shrink/plasmolyzed
isotonic
equal solute, equal water; normal/flaccid
plasmolysis
wilt, can recover
