Please answer and explain the following: 4. Below is a list of molecules with di

Question

Please answer and explain the following:

4. Below is a list of molecules with different chemical characteristics. Knowing that all molecules will eventually diffuse across a phospholipid bilayer, select the option below that most accurately predicts the relative rates of diffusion of these molecules (fastest to slowest). alanine estrogen propanol sodium (a) alanine > propanol > sodium> estrogen (b) sodium > propanol > alanine > estrogen (c) estrogen > propanol > sodium > alanine (d) estrogen > propanol > alanine > sodium

Explanation / Answer

The correct answer would be :

(d) estrogen > propanol > alanine > sodium

Reason: The more hydrophobic the molecule, the faster it will diffuse across the phospholipid layer.

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