What does the shape on the extracellular fluid side of this image represent? Cir

Question

What does the shape on the extracellular fluid side of this image represent? Circle one (large
polar molecules, ions, small polar molecules, small non-­?polar molecules)

Why are these shapes only on the extracellular fluid side?
What would need to be in place in order for these shapes to get to the cytoplasmic fluid side?

Extracelular Ru Cyooplasmic luid 5. What does the shape on the extracellular fluid side of this image represent? Circle one (large polar molecules, ions, small polar molecules, small non-polar molecules) Why are these shapes only on the extracellular fluid side? What would need to be in place in order for these shapes to get to the cytoplasmic fluid side?

Explanation / Answer

The extracellular fluid in this picture contains ions that cannot be transported to the intercellular fluid. That is why the ions are present on only one side. Polar molecules like water and non polar molecules like gases pass through the membrane without the need of a ny transporters or channels. But ions lie cl- , Na+ , K+ requires channels because lipid bilayer is impermeable for them to transfer from high concentration to lower concentration region. Here there are no channels and hence the ions are present in only on the extracellular fluid. So, ions channels must be present in the lipid bilayer inorder for the transfer.

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