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Cell membranes are made of
store energy.
are hormones in the body.
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Choose the term or phrase from the drop-down menu that completes each statement.Lipids are made mainly of
For each statement, choose whether it describes a protein or a nucleic acid.The subunits of contain a base, a five-carbon sugar, and a phosphate group.The subunits of are amino acids.Some of the subunits of must come from food.DNA and RNA are .
Complete each statement with the correct term from the drop-down menu.Many molecules are moved through the body by . provide structure for plants. determine what people look like. Cells are surrounded and protected by . speed up chemical reactions in the body.Hemoglobin, a protein, is built by .The human body is insulated by .
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