Practice: Membrane Transport 2

Sea urchin eggs are isotonic to seawater. Consider these conditions:

a) Eggs are in seawater.
b) Eggs are in 65% seawater (35% distilled water).
c) Eggs are in pure distilled water.

True or False?

i. Under condition b, the egg will not change size.

ii. Under condition a, the egg will not shrink.

iii. Under condition c, the egg will increase in size.

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