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Transport across a Cell Membrane

Extra Credit for 12/10/19
(Credit only granted if student was present for the quiz and all the questions were attempted.)
Across
A carbohydrate that is too big to go through a semipermeable membrane
The concentration of dissolved molecules (such as salt) is LOWER outside the cell, so the concentration of water is higher than inside the cell and water will diffuse into the cell and make it swell up.
A state of balance, refers to an equal concentration of molecules on both sides of a membrane
(2 words) Movement across a membrane that requires energy; can move molecules across the concentration gradient (from low to high concentration)
The color of Lugol's iodine if it has not come into contact with starch.
(2 words) A difference in concentration (from high to low)
How many molecules there are, and how crowded together they are.
(2 words) used to contain the mixture of glucose indicator and the liquid from outside the artificial cell, so that it can be heated in a hot water bath
The concentrations of dissolved substances are equal inside and outside a cell, so there will not be any net diffusion of water into or out of the cell
With water inside, put on a hot plate to heat up for a hot water bath
Down
The diffusion of water across a membrane
Molecule that contains energy for the cell, that is needed for active transport to happen
(2 words) diffusion across a membrane
Allows only certain materials to pass through
The concentration of dissolved molecules (such as salt) is HIGHER outside the cell, so the concentration of water is lower than inside the cell and water will diffuse out of the cell and make it shrink.
(2 words) used for diffusion across a membrane experiment, a plastic semipermeable membrane representing the cell membrane
The color starch changes to when Lugol's Iodine (starch indicator) is added to it.
A light blue solution that acts as a glucose indicator because it turns into a different color (white or orange) when mixed with glucose and heated
Can be used to heat up water in a beaker for a hot water bath for test tubes
the movement of molecules from areas of high concentration (crowded) to areas of low concentration (not crowded). No energy is needed.
Starch indicator; turns black in the presence of starch