The Biology Project: Biochemistry

Chemistry Tutorial

Problem 5: Elements used by living systems

The availability of elements in the environment does not by itself guarantee selection for living cells. This is because elements used for making the molecules of living systems must be:

A. hydrophilic and hydrophobic.
B. suitable and available.
C.water soluble and ionic.
D. covalent and H bonding.

Problem 4Problem 6

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