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40 Cards in this Set

  • Front
  • Back
Cell
Basic unit of structure and function
photosynthesis
ability of plants and some bacteria to convert solar energy to chemical energy
metabolism
all chemical and engery transformation within the cell.
Homeostasis
the internal maintence of conditions within a certain range.
natural selection
certain individuals may inherit a change in their genectics that makes it better suited to its current environment
evolution
actual process by which changes occur over time in organisms.
adaptation
peculicarity of form, function, or behavior that promotes a species existence
biodiversity
the total number of species and their relative abondance
isotopes
have the same number of protons but a different number of neutrons (can meausure age)
Ionic Bonding
when electrons are ctually transferred
Coralent bonding
where electrons are shared
cell theory
all organizimes are composed of cells, cells are the basic unit of both stucture and function, cells only come from pre existing cells.
osmosis
diffusion of water across a semipermeable membrane
tonicity
relative concentration of solutes in a solutuion
Isotonic
cell neither gains nor looses water (animal cells)
Hypotonic
gain water (fresh water)
hypertonic
lose water( salt water fish)
tight junction
intesine, kidney
gap junction
heart and smooth muscle
adhesion junctions
heart, stomach, bladder
energy
the capacity to do work
enzymes
speed up chemical reactions
cellular respiration
process within the cell that requires oxygen and gives co2
glycolysis
breaks down a 6 carbon glucose molecule into 2 3 carbon pyrovate molecules
catabolism
breaking down molecules
anabolism
forming molecules
prokaryotic cells
bacteria, archae, no nucleus
eukaryotic cells
more complex, has nucleus
nucleus
contron center of the cell controls metabolism and DNA
cytoskelaton
maintains the shape of a cell
ribosomes
small particals where protein synthesis occurs
endomembrane system
consists of nuclear envelope, endoplasmic retialom, golgi apparatus, vesicals
rough endoplasmic reticulum
studded with ribosomes, forms proteins
smooth endoplasmic reticulum
function depends on the kind of cell
golgi apparactus
recieves and processes molecules
vacuoles
storage structure, large membranous sacs
chloraplasts
site of photosythesis (plants and alge have them but cyanbacteria dont)
mitochondria
powerhouse of the cell, site of cell respiration... carbohydrates are converted to ATP
plasma membrane
interface between living interior and non living exterior of the cell
diffusion
moving from high concentration to low concentration( coolaide)