Biology 8.1 review

hypertonic solution

In a hypertonic solution, the concentration of dissolved substances outside the cell is higher than the concentration inside the cell. cell sin a hypertonic solution experience osmosis that causes water to flow out A hypertonic solution is where outside the cell, the dissolved substances are more concentrated than inside the cell. ANIMAL CELLS IN A HYPERTONIC SOLUTION SHRIVEL BECAUSE OF DECREASED PRESSURE IN THE CELLS. pucker lips in a hypertonic solution, water leaves a cell by osmosis, causing the cell to shrink.

hypotonic solution

In the hypotonic solution the concentration of dissolved substances is lower in the solution outside the cell than the concentration inside the cell. Therefore, there is more water outside the cell than inside. Cells in a hypotonic solution experience osmosis. Water moves through the plasma membrane into the cell. The cell swells and its internal pressure increases. VEGTABLES GETTING WATER SPRAYED O NTHEM (PRESSURE ON CELL WALL) In a hypotonic solution, water enters a cell by osmosis causing it to swell

facillitated diffusion

Passice transport of materials across the membrane using ransport proteins

isotonic solution

The concentration of dissolved substances in the solution is the same as the concentration of disolved substances inside the cell. In an isotonic solution, water molecules move into and out of the cell at the same rate, and cells retain their normal shape.

endo/exocytosis

large particles entering a cell and then exiting

Passive transport does what>

moves a substance with the concentration gradient & requires no energy from the cell

Active transport does what?

moves materials against the concentration gradient & requires energy to overcome the flow of materials opposite the concentration gradient

Osmosis

the diffusion of water through a selectively permeable membrane