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Lab 2
Human Biology Lab 2, diffusion and osmosis
12
Biology
Undergraduate 2
11/11/2011

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Term
Diffusion
Definition
when dissolved particles move from an area of high concentration to an area of low concentration.
Term
Osmosis
Definition

when particles move from an area of low concentration to an area of high concentration.

Term
solvent
Definition
someting that solves/разтворяет
Term
solute
Definition
solid part of solution
Term
dialysis tubing
Definition
an artificial membrane with many small pores.
Term
Iodine
Definition

test for starch

+ black

-reddish-brown

Term
silver nitrate
Definition

checks for presens of chloride ions

+cloudy white

- clear

ex:salt

Term
Benedict's
Definition

test for simple sugar(glucose)

- turquoise blue 

+

green

yellow

orange

red

Term
qualitative test
Definition

>Comparative testing for comparative results.

> test would show which material is “stronger” than another.

Term
elodea
Definition
is a freshwater plant
Term
plasmolysis
Definition
Plasmolysis is the process in plant cells where the plasma membrane pulls away from the cell wall due to the loss of water through osmosis.
Term
quantitative test
Definition

> test would not only show which material was “stronger,” but also exactly how much stronger it was.

>Comparative testing for numeric results

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