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Question
Which ion is essential for maintaining the permeability of the cell membrane?
Which ion is essential for maintaining the permeability of the cell membrane?
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Solution
The correct option is A Ca
Calcium is an essential macronutrient for plants. It is required in cell wall synthesis as calcium pectate, development of root and stem apices, cell membrane permeability, activator of some enzymes and for organisation of mitotic spindle. It seems plausible that the presence and / or absence of calcium ions on specific areas of ion pores/channels results in a change of the proteins shape. Calcium may affect the distribution of electrons on the protein and alter the atomic / intra-molecular bond angles. This could modify the structural conformation of the pore / channel proteins, creating differences in membrane permeability to specific ions.
Calcium is an essential macronutrient for plants. It is required in cell wall synthesis as calcium pectate, development of root and stem apices, cell membrane permeability, activator of some enzymes and for organisation of mitotic spindle. It seems plausible that the presence and / or absence of calcium ions on specific areas of ion pores/channels results in a change of the proteins shape. Calcium may affect the distribution of electrons on the protein and alter the atomic / intra-molecular bond angles. This could modify the structural conformation of the pore / channel proteins, creating differences in membrane permeability to specific ions.
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