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Which of the following causes passive mineral absorption?
Option: 1
Pump proteins
Option: 2
Donnan equilibrium
Option: 3
Transfer proteins
Option: 4
All of these
Answers (1)
Passive Absorption of Mineral Ions:
- It involves absorption of mineral ions without expenditure of energy.
- It is not affected by the metabolic inhibitors.
- It can be explained by the following hypothesis:
- Contact Exchange Theory
- Carbonic Acid Exchange Theory
- Donnan Equilibrium
The Donnan equilibrium is a completely passive process: i.e. no active transporters are involved in maintaining the charge equilibrium. Hence, the correct answer is option b.
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