M10: Transport Mechanism Flashcards
Does not require energy to work
Diffusion – Simple and Facilitated
Osmosis
PASSIVE PROCESSES
types of passive processes
1. D________
2. O________-
diffusion
osmosis
Movement of solutes to an area of high concentration to an area of low concentration
SIMPLE DIFFUSION
types of diffusion
- s_______
- F________
- simple
- facilitated
NONPOLAR SOLUTES CAN PASS EASILY
cell membrane
Happens when there is a difference in the concentration of nonpolar solutes across a cell membrane.
SIMPLE DIFFUSION IN CELLS
example of nonpolar solutes across a cell membrane
O2, CO2, Fatty acids
Difference in concentration of polar solutes between 2 areas.
FACILITATED DIFFUSION
FACILITATED DIFFUSION
example
1. i_____
2. g________
- ions
- glucose
2 TYPES of facilitated diffusion
- C_______ mediated diffusion
- C_______ mediated diffusion
2 TYPES of facilitated diffusion
- Channel mediated diffusion
- Carrier mediated diffusion
types of channel mediated diffusion
1. l____ channel
2. G____ channel
a. leak channel
b. gated channel
Always open
LEAK CHANNEL
Open when needed
GATED CHANNEL
Opening changes shape
Carrier Mediated Diffusion
Passive movement of solvent (water) through a selectively permeable membrane
OSMOSIS
OSMOSIS ACROSS A CELL MEMBRANE
- Lipid bilayer
- A_________ - Protein Channel
aquaporin
Requires cellular energy
active processes
2 Types of active processes
- a_____ transport
- v________ transport
- active transport
- vesicular transport
Movement of solute against the concentration gradient
ACTIVE TRANSPORT
2 Types of active transport
- P_______ Active transport
- S__________ Active transport
Primary Active transport
Secondary Active transport
Uses transmembrane channels known as ions pumps
Primary Active Transport
Move against the concentration.
Primary Active Transport
Low concentration to high concentration
Require energy (ATP)
Primary Active Transport
Primary Active Transport – Ion pump
- ATP will attach and stimulate/ change the shape of the ion pump
- ATP will allow 3 N__ion into the pump
- ATP will change into _____ and P
- ADP will be released back into the cytoplasm as P will remain attach to the pump
ATP will attach and stimulate/ change the shape of the ion pump
ATP will allow 3 Na ion into the pump
ATP will change into ADP and P
ADP will be released back into the cytoplasm as P will remain attach to the pump
Primary Active Transport – Ion pump
Na ions will travel _____ of the pump
P will attract 2 ___ ions into the pump
K ions will travel out of the pump
P will be released
Pump will go back to its original shape.
Na ions will travel out of the pump
P will attract 2 K ions into the pump
K ions will travel out of the pump
P will be released
Pump will go back to its original shape.
High to low concentration,
will produce energy that will let the movement of a molecule from low concentration to high concentration
Secondary Active Transport
2 Types of Secondary Active Transport
Antiport
Symport
2 substances are move in the opposite direction
Antiport
2 substances are move in the same direction
Symport/ Symporter
Uses transport Vesicle a membranous sac that is found in the cytoplasm
Vesicular Transport
Movement of large molecules (proteins and polysaccharides)
Vesicular Transport
2 types of Vesicular Transport
Exocytosis
Endocytosis
Use of vesicles to move molecules out of the cell
Exocytosis
3 types of endocytosis
- ph_________
- pi__________
- r_________ m__________ endocytosis
Endocytosis
3 types
Phagocytosis
Pinocytosis
Receptor mediated Endocytosis
Use of vesicles to move large molecules inside the cell
Phagocytosis
Use of vesicles to move interstitial fluid with solutes (small molecules mixed with water) inside the cell.
pinocytosis
Uses receptors (carbohydrates) attached in the lipid bilayer to move certain/special molecules into the cells
Receptor Mediated Endocytosis
