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35 Cards in this Set

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eukaryotic
no memebrane bound nucleus, only DNA and ribosomes, bacteria
prokaryotic
membrane bound nucleus, different organelles
cell theory
1. all living things are made of cells
2. cell is the fundamental unit of living things
3. cells come from pre-existing cells
cytoplasm
region b/w nucleus and membrane
cytosol
fluid in which organelles are suspended in
chromatin
highly condensed DNA w/ associated enzymes in the nucleus
chromosomes
strand of DNA
grana
site where light energy is trapped and converted to chemical energy
thylakoid
stack of sacs in chloroplast
stroma
fluid in chloroplast
christae
structure inside mitochondria
matrix
spaces between christae
cytoskeleton
skeletal and muscular system for cell
cilia
short and numerous
flagella
long and alone or in pairs
cell junctions
structures connecting cells together to allow them to function in a coordinated way
plasmodesmata
channel that passes through plant cell walls, connecting cytoplasms of cells
extracellular matrix
space outside of cell
fluid mosaic model
structure of cell membrane-mosaic of many sturctures-phospholipid bilayer and proteins
phospholipids
hydrophilic phosphate head with two hydrophobic fatty acid tails
selective permeability
cell regulate what enters and exists the cell through the cell membrane (phospholipid bilayer and proteins)
transport proteins
membrane protein that helps objects move across the cell
osmosis
movement of water through the cell membrane
hypertonic
solution with the highest concentration of solute
hypotonic
solution with the lowest concentration of solute
isotonic
concentration of the solute is the same on both sides
osmoregulation
control of the water balance in the cell
turgid
plant cell in hypotonic solution-healthy
flaccid
plant cell in isotonic solution-wilting
plasmolysis
plant cell in hypertonic solution-usually lethal
active transport
moving against the concentration gradient-
endocytosis
bringing large substances into the cell
exocytosis
taking large substances out of the cell
pinocytosis
substances being brought in as a liquid
phagocytosis
substances being brought in as a solid