Card 50 / 108: Proteins
A) are involved in almost every important function performed by a cell.
B) comprise more than 50% of the dry weight of a cell.
C) are composed of a string of nucleotides.
D) are characterized by a 1:2:1 ratio of carbon to hydrogen to oxygen.
E) are involved in almost every important function performed by a cell AND comprise more than 50% of the dry weight of a cell.

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