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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)

best_answer

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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vishal kumar

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