Differentiate between active and passive transport
Answers
=>Active Transport moves ions from low concentration to high, using metabolic energy in the form of ATP. ... Both use ion channels to move ions across the cell membrane, in or out of the cell.
=> Passive Transport (or Diffusion) moves ions from high concentration to low, using no metabolic energy.
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1. The transport involves an expenditure of energy by the cells.
2. Active transport usually occurs against concentration or electrochemical gradient.
3. It helps in the accumulation of substances in the cells.
4. Active transport is a vital process.
5. It requires carrier proteins. Matrix or permeases of the membrane are not involved.
6. It is highly selective.
7. Active transport is a rapid process.8. Active transport occurs in one direction.
9. It is reduced or stopped with O2 deficiency.
10. Metabolic inhibitors stop active transport.
11. Decrease in temperature decreases it.
Difference # Passive Transport:1. The cells do not spend energy in passive transport.
2. Passive transport is always along the concentration or electrochemical gradient.
3. Passive transport does not allow accumulation of substances in the cell.
4. It is a physical process.
5. Carrier proteins are not involved. It takes place through matrix/channels/permeases.6. Passive transport is partly non-selective. All diffusible substances can be transported according to their concentration gradient.
7. It is a comparatively slow process.
8. Passive transport is bidirectional.
9. Passive transport is unaffected by O2 content.
10. Metabolic inhibitors do not influence passive transport.
11. It is not affected by temperature.