Anatomy & Physiology Robinson Diffusion And Osmosis

Front 1

The net movement of particles of a particular substance from regions of its higher concentraion to its lower concentration (provided that all regions are at the same temperature and pressure).

Back 1

Diffusion

Front 2

Diffusion of H2O molecules thru a permeable membrane

Back 2

Osmosis

Front 3

What 2 conditions must be necessary for diffusion to be classified as osmosis.

Back 3

1. Diffusion of H2O
2. Thru a selectively permeable membrane

Front 4

LOWER solute concentration, therefore, a HIGHER water concentration as the comparable solution.

Back 4

Hypotonic Solution (less solution)

Front 5

Is their a net movement of water into or away from HYPOTONIC solutions?

Back 5

INTO the cell

Front 6

BURSTING of a cell due to the INCREASE of H2O pressure

Back 6

Cytolysis

Front 7

If NOTHING can move thru membrane then its an _____________ membrane

Back 7

IMPERMEABLE

Front 8

If SOME an move thru the membrane it is a _________________ membrane.

Back 8

SELECTIVELY PERMEABLE

Front 9

True or False?

Are all diffusion processes Osmosis?

Back 9

NO

Front 10

The lower the solute concentration, the ___________ the H2O conentration.

Back 10

HIGHER

Front 11

Diffusion will progress to __________ ___________ and then it stops.

Back 11

Dynamic Equilibrium

Front 12

SHRINKING of a cell due to the LOSS of H2O pressure

Back 12

crenation/plasmolysis

Front 13

Is there a net movement of water into or away from HYPERTONIC solutions?

Back 13

AWAY from (out of the cell)

Front 14

MORE concentration than water

Back 14

HYPERtonic

Front 15

LESS concentration than water

Back 15

HYPOtonic

Front 16

That point in which ALL NET MOVEMENT of a particular stops.

Back 16

Dynamic Equilibrium

Front 17

SAME solute concentration, therefore, the same H2O concentration as the comparable solution.

Back 17

Isotonic (same solution)

Front 18

Is their a net movement of water into or away from isotonic solutions?

Back 18

NEITHER, its in Dynamic Equilibrium

Front 19

What is this process called:

Many essentials nutrients like amino acids and glucose are insoluble in lipids and too large to pass through the channel pores. These substances can be transported across the plasma membrane by facilitated diffusion. The molecule to be transported binds to a protein - the shape of the protein then changes moving the molecule inside the cell. Like simple diffusion molecules move from high to low concentrations, so no energy is required.

Back 19

Facilitated diffusion

Front 20

How does Facilitated Diffusion differ from simple diffusion?

Back 20

Once the carrier protein is saturated the rate of diffusion cannot increase even if the concentration gradient increases.

Front 21

HIGHER solute concentration, therefore, LOWER H2O concentration as the comparable solution.

Back 21

Hypertonic Solution (more solution)

Front 22

The movement of substances through the plasma membrane with NO ENERGY.

Back 22

Passive transport

Front 23

The CELL EXPENDS ENERGY to move substances across the cell membrane.

Back 23

Active transport

Front 24

Give 3 examples of passive transport.

Back 24

Examples - diffusion, facilitated diffusion, and osmosis.

Front 25

Substances move across the plasma membrane by COMBINING WITH CARRIER molecules located in the plasma membrane. These molecules are proteins called permeases.

Back 25

Carrier molecule

Front 26

The introduction of fluids in to the cytoplasm by enclosing them in membranous vesicles at the cell surface.

Back 26

Pinocytosis{ cell drinking}

Front 27

The process by which substances are MOVED OUT of a cell by cytoplasmic vesicles that merge with the plasma membrane.

Back 27

Exocytosis

Front 28

The ENGULFING of solid material such as pathogens into the cytoplasm by enclosure in a vesicle.

Back 28

Phagocytosis{ cell eating}
PAC-MAN