1. CELL TRANSPORT

2. Modes of transport
Active
Passive

3. Links of animated diagrams

5. Q 1 :
What are the differences between active & passive transport?

6. A 1 : Active transport Needs energy from ATP
Transport against chemical / electrical gradient
Passive transport
Does not need energy
Molecules move randomly along a concentration gradient

7. Facilitated diffusion
Passive transport
Solvent diffusion
Facilitated diffusion
Osmosis
Solvent drag

9. OSMOSIS

10. ACTIVE
Primary
Secondary
Exocytosis
Endocytosis

11. What is the difference between primary & secondary active transport?
Q :
What is the difference between primary & secondary active transport?
A :
Primary active transport directly uses ATP while secondary active transport indirectly needs energy.

13. Exocytosis
Endocytosis

14. ENDOCYTOSIS PINOCYTOSIS PHAGOCYTOSIS
Engulf large particles into vesicles
PINOCYTOSIS
Uptake of fluid & fluid contents

15. Mechanisms of cell transport
Diffusion
Membrane proteins
Channels
Carriers/
Transporters
Endocytosis
Osmosis
Solvent drag

16. What is Simple diffusion?
Q 2:
What is Simple diffusion?
A 2 :
Passive flow of a solute from high concentration to a low concentration due to random movement

17. Channels & Transporters
Specific
Can be inhibited
Competition between similar molecules
Can get saturated

18. Gated Ion Channels
Voltage-gated
Ligand-gated
Mechanical-gated

19. Q : What are Aquaporins A : Water channels in certain cell membranes .
Eg: red cells, collecting ductules of kidney.

20. Carrier mediated transporters
Symports
Uniports
Antiports

22. THE END