Which macromolecule offers structural support in cells, signals between cells, controls cell growth,
and speeds up chemical reactions?
A. protein
B. carbohydrates
C. lipids
D. nucleic acids



Answer :

Final answer:

Proteins provide structural support, signaling, growth control, and catalyze reactions in cells.


Explanation:

Proteins offer structural support in cells, signal between cells, control cell growth, and speed up chemical reactions. For example, enzymes are proteins that catalyze chemical reactions within cells.


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