Question

You put some sugar in your coffee and let it sit for some minutes. After a while, even without stirring, your coffee is sweet. This is an example of...

	1.	simple diffusion
	2.	facilitated diffusion
	3.	osmosis
	4.	active transport
	5.	endocytosis

Answer 1

Simpe diffusion

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In the absence of stirring, the concentration of solute will be highest close to the pieces of solute, so more solute won't dissolve into the solution until the dissolved solute has been transported away by diffusion.

In simple diffusion, molecules move down the concentration gradient but in facilitated diffusion molecules move up the concentration gradient.

Simple diffusion is passive but facilitated diffusion is an active process that uses energy.