Question

The percentages of aqueous sugar solutions with different concentrations which are separated by a semipermeable membrane are given below.For each of the situations below,indicate the flow of water in osmosis

2% sugar             5%sugar              9% sugar             20% sugar

1% sugar             7% sugar             5% sugar             205 sugar

1.Why do fingers look like prunes after swimming in a swimming pool after several hours?

2.What happens to the sixe of a small piece of sliced mango if it is immersed in a 10% salt and vinegar solution?Why?

 

Answer 1

Now we know that pruney fingers are caused by shrinking blood vessels. When you soak in water, your nervous system sends a message to your blood vessels to shrink. Your body responds by sending blood away from the area, and the loss of blood volume makes your vessels thinner.