7. Normal RBCs are placed in a hypotonic solution. Which of the following will t

Question

7. Normal RBCs are placed in a hypotonic solution. Which of the following will take place within the first 5 minutes? Circle all correct answers within the pairs. The RBCs will...

a) gain water by the process of diffusion - or - gain water by the process of osmosis

b) lose water by the process of diffusion - or - lose water by the process of osmosis

c) gain salt by the process of diffusion - or - gain salt by the process of osmosis

d) lose salt by the process of diffusion - or - lose salt by the process of osmosis

e) neither gain nor lose salt or water (the amounts of each will remain the same)

8. The process of filtration is used in which human organ?

9. When necessary, the cell will break down glycogen into glucose molecules which can then be metabolized to produce chemical energy in the form of ATP. Liver and muscle cells must use energy to produce and store the glycogen, which then must be broken down into glucose for ATP production. It would seem to be more energy efficient for liver and muscle cells to store large quantities of glucose instead of glycogen; but they don't. Explain why not. Think about the transport processes being discussed in this exercise.

Explanation / Answer

7. a) gain water by the process of osmosis

d) lose salt by diffusion or osmosis.

Explanation: hypotonic medium is less concentrated than rbc. Hence the system will adjust itself to become equal concentration. Water will enter RBC and salt will move out. The RBC will in turn expand and burst.

8. The kidneys use filtration to filter urine from blood. The filtration is done in nephrons.

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