Diffusion Questions and Answers (Q&A)

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(c) Hypertonic

A saline solution with 1.5% saline would be considered hypertonic when going in the body. The blood in our bodies has a saline concentration of 0.9% on average. A hypertonic solution, for those who don’t know, is a solution that has more salt than what it’s...

4 Answers

Starch

As we observed in the Diffusion Through a Membrane lab, starch cannot pass through a semi-permeable membrane. We know this because the solution surrounding the cell we constructed remained amber, instead of turning purple. Starch is too large a molecule to pass through the membrane...

4 Answers

Diffusion is the movement of molecules from a region of high molecular concentration to a region of low molecular concentration until they are evenly distributed

3 Answers

Hypertonic

Our blood has a concentration of 0.9% saline. Any substance with a higher salt concentration is considered hypertonic, while any solution with a lower salt concentration is hypotonic. Solutions with equal concentration are called isotonic.

3 Answers

The equilibrium is reached is number 3. The dissolved sugar molecules are evenly distributed throughout the solution. Some may think that the salt solution and sugar solution is the same but there are some differences between the two.

For example, in salt solution, the salt will mix...

3 Answers

Endocytosis, pinocytosis and phagocytosis are means of taking in materials into the cell membrane.
Endocytosis is a cellular process of taking materials by invagination of the cell membrane to form a vacuole.

Pinocytosis is a cellular process of taking materials (mostly liquid)...

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Both of this guys the wrong idea the real answer is 3 because it goes across the membrane and that is why the dye molecule is know going through the bottle. I'm sorry that this people didnt know the answer

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The answer to this is Facilitated Diffusion. Facilitated diffusion is the process by which the passive transport of molecules and ions through a passageway going to the integral membranes. Usually, the molecules that would need to undergo this process would move in and out of the cell...

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The answer to this is number 1. Aquaporins. This integral membrane is responsible for providing the needed channels so that water can be transferred easily. You can just imagine how hard it would be when these channels do not exist in order to serve as the passageway of water between the...

2 Answers

Lipids are not able to pass through cell membrane as they are simply too large to pass through the cell membrane and lipids are not able to pass through plain phospholipid bilayer.

2 Answers

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