BAB 3 [ CHAPTER 3]

Hydrophilic head

Hydrophobic tails

carrier protein pore protein

Pho

spho

lipid

bila

yer

Extracellular space

Intracellular space

H2OH2O

H2OH2O H2O

OSMOSIS

attracted to water

Between the phospholipid bilayer

Through the phospholipid bilayer

Through the pore protein

Hydrophilic head

Hydrophobic tails

Pho

spho

lipid

bila

yer

Extracellular space

Intracellular space

Fatty acids

Glycerol

steroid

ADEK

Lipid-soluble molecules

FACILITATED DIFFUSION

Fatty acidsSteroidGlycerol

ADEK

Large water-soluble molecules

GlucoseAmino acid

carrier protein

Inorganic ion(water soluble)

Na+

GlucoseAmino acid

K+

Na+

K+

pore protein

Hydrophilic head

Hydrophobic tails

carrier protein pore protein

Pho

spho

lipid

bila

yer

Extracellular space

Intracellular space

Small uncharged molecules

CO2

O2

SIMPLE DIFFUSION

Hydrophilic head

Hydrophobic tails

pore protein

Pho

spho

lipid

bila

yer

Extracellular space

Intracellular space

K+ Na+

Inorganic ion(water soluble)

ACTIVE TRANSPORT

PAP

P

carrier protein

P

AP

PATP

ADP + Phosphorus

MOVEMENT OF SUBSTANCES ACROSS THE PLASMA MEMBRANE

Passive transport

Simple diffusion

Osmosis

Facilitated diffusion

Active transport

Active transport is the movement of molecules or ions from a region of lower concentration to a region of higher concentration across the plasma membrane

MOVEMENT OF SUBSTANCES ACROSS THE PLASMA MEMBRANE

Passive transport

Simple diffusion

Osmosis

Facilitated diffusion

Active transport

Simple diffusion is the net movement of molecules or ions from a region of high concentration to a region of lower concentration

MOVEMENT OF SUBSTANCES ACROSS THE PLASMA MEMBRANE

Passive transport

Simple diffusion

Osmosis

Facilitated diffusion

Active transport

Osmosis is the diffusion of water molecules from a region of low solute concentration to a region of high solute concentration through a semi-permeable membrane

MOVEMENT OF SUBSTANCES ACROSS THE PLASMA MEMBRANE

Passive transport

Simple diffusion

Osmosis

Facilitated diffusion

Active transport

Facilitated diffusion refers to the movement of hydrophilic molecules or ions across the plasma membrane with the help of transport proteins

Hypotonic Isotonic Hypertonic

TURGID PLASMOLYSIS

Hypotonic Isotonic Hypertonic

HAEMOLYSIS CRENATION

burst

shrink

Epidermis layer

30% sucrose solution

17% sucrose solution

Distiled water

Immersed inImmersed in

IMPORTANT EXPERIMENT

Determining the concentration of an external solution which is isotonic to the cell sap of plant cells – PB pg27

Determining the effect of isotonic, hypotonic and hypertonic solutions on the stems of non-woody plants (spanish) – PB pg30