Post-Quiz 5: Membrane Structure and Tonicity Concepts

Fluid Mosaic Model

Describes membrane structure

Tonicity

Relative solute concentration of two fluids

Plasmolysis

Loss of water in a plant cell

Crenation

Loss of water in a red blood cell

Osmosis

Diffusion of solvent across a semi-permeable membrane

Diffusion

Movement of molecules down a concentration gradient

Solvent

A substance in which solutes are dissolved

Hypertonic

One fluid has more solute than the other

Hypotonic

One fluid has less solute than the other

Isotonic

Two fluids have equal solute concentrations

the silver nitrate test for

chloride ions

distilled water is an example of

hypotonic solution

If a cell is placed in a hypotonic

it will swell

This will occur if a plant cell is placed in a hypertonic solution

plasmolysis

Lugol Iodine Test

polysaccharide

A cell is what?

selectively permeable