Biology Quiz For Unit 3

Front 1

Diffusion

Back 1

Net movement of particles from an area of higher concentration to an area of lower concentration.

Front 2

Dynamic Equilibrium

Back 2

continuous movement of particles with no overall change in concentration

Front 3

Selective Permeability

Back 3

Allows plasma membrane to let some materials to come into the cell whil keeping oter materials out.

Front 4

Osmosis

Back 4

Diffusion of water molecules from an area of higher water concentration to an area of lower water concentration

Front 5

Isotonic Solution

Back 5

concentration of dissolved substances in solution equals concentration of dissolved substances in the cell. (no osmosis and cells have normal shape)

Front 6

Hypotonic Solution

Back 6

Concentration of dissolved substances in solution is lower than the concentration of dissolved substances inside the cell. the water will move from solution into the cell and it will swell up and potentially explode

Front 7

Hypertonic Solution

Back 7

concentration of dissolved substances in solution is higher than the concentration of dissolved substances inside the cell. (water will move out of the cell and into the solution)

Front 8

Active transport

Back 8

cell actively moves things across the membrance. NOT osmosis or diffusion

Front 9

Passive transport

Back 9

cells transport, just happens, osmosis and diffusion happen, cell doesn't work to transport.

Front 10

Osmosis and Diffusion

Back 10

-Molecules move because they have conetict energy.
-Always in motion (many collisions)

Front 11

Air pathway

Back 11

In through nose or mouth, on to pharynx, past epiglottis, past the larynx, to the trachea, splits into 2 bronchus that each lead to a lung, bronchi branch into bronchioles, then branch and expand into alveoli.

Front 12

epiglottis

Back 12

prevents food from entering the lungs

Front 13

Larynx

Back 13

vocal chords are here

Front 14

Trachea

Back 14

passage way to lunds, lined with cilia and mucus to trap pollutants

Front 15

Alveoli

Back 15

thin walled sacs surrounded by blood vessels.
Allow for axygen and carbon dioxide exchange between lungs and bllod.
Increase surface area for gas exchange

Front 16

Inhale

Back 16

Rib muscles contract and lift ribs up and out
Diaphragm muscle contracts and moves down
Chest cavity volume becomes larger
air moves in

Front 17

Exhale

Back 17

Rib muscles relax and move in and down
Diaphragm relaxes and moves up
Chest cavity volumes decreases
Air forced out