I've been reading a book called Principles of Human Physiology by Stanfield 5th edition, and was reading a chapter on membrane transport when I came across a figure question which will be posted below.
It says "As time passes, does the one-way flux from side 2 to side 1 increase, decrease, or stay the same?"
I have unfortunately been unable to comprehend why and how the answer is "Increase". I would suppose it stays the same, correct? There is no possible way that a flux would occur, unless by individual molecules (regularly) passing through each side on a equal basis.
It was a topic on Simple diffusion.
P.S. This book, as i've noticed hasnt been quite explaining some things in a clear-cut way to understand as a beginner, and also it has had some mistake within it.