Biol 4 Flashcards
Solvents
Dissolving agent
In osmosis, the solutions of different concentrations are separated by a membrane only solvents can go through
Solutes
Dissolved substances. Movements are regulated by selectively permeable membranes
ATP
Adenine triphosphate is spent to actively more dissolved substances across membranes by cells
Diffusion
Migration of molecule from ↑ to ↓ concentrations
Not directly related to a cell
Uses kinetic energy
Molecules have to be non polar and small to pass through call membrane (lipids, oxygen gas hydrogen gas,)water cannot pass without A channel protein.
Osmosis
The facilitated diffusion of water from a↑ concentration to ↓
Hypotonic isotonic hypertonic
Lysed normal shriveled
Turin flaccid plasmolized
Tonicity
The concentration of solutions inside/outside a cell that determines water flow
Brownian motion:
Molecules of liquid/gas one constantly ln Motion becuase of intristic kinetic energy 1827 brown noticed pollen grains suspended in water on a slide moved by an unexplainable force movement i l s random and will never stop unless is reaches absolute zero smaller particles move faster than larger
We only observed
The result of molecular movement becuase you cannot see molecules with a light microscope
Plasmalysis
The central vacuole of a plant cell affects the response to solutions with different polarities. Hypertonic solutions: the protoplasm strings pulls away from the cell wall
Turgor pressure
The pressor of the protoplasm on the cell wall slowing the uptake of water and charges the flow of water
NaCl saline DI
Plasmolyzed, turgid, flaccid
Osmolarity
Solute concentration
Molarity in exp
NaCl and saline were used to find the polarity where the weight does not changed as there has not been a gain/loss of water
% Change, >=
X is unknown concentration f-i I 5/00
