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PreQuiz
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1Which of the following statements about water is false?
A)It is the least abundant component of the cytoplasm
B)It is required for cellular metabolism
C)Water serves as a source of electrons and hydrogen ions
D)Water acts as a solvent for chemical reactions



2What is the definition of osmosis?
A)The movement of molecules down their concentration gradient
B)The movement of salt molecules across a semipermeable membrane
C)The diffusion of water molecules across a semipermeable membrane
D)The movement of molecules against their concentration gradient



3Most often, the internal environment of a cell has a higher concentration of solutes than is found in the environment outside.
A)True
B)False



4When the concentration of solutes inside a cell is less than the concentration of solutes outside a cell, which direction will water flow?
A)The net flow of water will be into the cell
B)The net flow of water will be out of the cell



5At what salt concentration do the majority of bacteria grow best?
A)0.9% to 1.0%
B)1% to 13%
C)13% to 25%







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