Reading...
Play button
Play button
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;
30 Cards in this Set
- Front
- Back
|
Brownian Movement
|
constant, random movement of particles
|
|
|
Particles possess what kind of energy?
|
Kinetic energy
|
|
|
Energy moves from a higher to a _______ source.
|
lesser
|
|
|
Diffusion
|
process by which molecules move from a high concentration to a lower concentration
*stops at equilebrium |
|
|
Dynamic Equilibrium
|
maintaining equilibrium is a constant process
|
|
|
Osmosis
|
diffusion of water across a selsctively permeable membrane
|
|
|
Factors affecting diffusion and osmosis.....
|
temperature
concentration gradient permeability size of molecule area of exposure |
|
|
How does temp affect diffusion and osmosis?
|
the higher the temp the faster the rate
|
|
|
Concentration gradient
|
the larger the difference the greater the rate
|
|
|
Name the types of solutions...
|
isotonic
hypertonic hypotonic |
|
|
the item being dissolved is known as the...
|
solute
|
|
|
the item doing the dissolving is known as the....
|
solvent
|
|
|
A solution that is the same concentration as the item it surrounds is known as a...
|
isotonic solution
|
|
|
a solution that is more concentrated than the item it surrounds is known as a ....
|
hypertonic solution
|
|
|
a solution that is less concentrated than the item it surrounds is known as...
|
hypotonic solution
|
|
|
in plants high osmotic (water) pressure helps create what?
|
turgor (firmness)
|
|
|
flaccid is...
|
lost turgor....or wilted plants
|
|
|
the shrinking of the cytoplasm away from the cell wall due to a loss of turgidity ( in plants) is
|
plasmolysis
|
|
|
the shrinking of appearance of cell due to loss of water ( in animals) is
|
crenation
|
|
|
hemolysis is....
|
the bursting of red blood cells
|
|
|
diffusion across a membrane with the help of a carrier molecule....
|
facilitated diffusion
|
|
|
movement from a high concentration to a low concentration...
|
passive transport
*requires no added energy |
|
|
movement from a low concentration to a high concentration with energy required...
|
active transport
|
|
|
examples of bulk transport
|
endocytosis
exocytosis |
|
|
The process of cells taking in materials is know as....
|
endocytosis
|
|
|
name three types of endocytosis...
|
phagocytosis
pinocytosis receptor mediated |
|
|
phagocytosis
|
taking in solids (food)
|
|
|
pinocytosis
|
taking in liquids
|
|
|
receptor mediated
|
protein receptors identify specific items taken in
|
|
|
exocytosis
|
cells releasing materials
|
