Answer please whoever answer & explain first gets brainliest. a protein that speeds up a chemical reaction is --

a) enzyme
b) peptide bond
c) isomer
d) polymer

Enzyme.

Enzymes are protein catalysts that are produced by living plants and animals. They help speed up many biological reactions like the conversion of urea to ammonia and starch to maltose.

Peptide bonds, isomers and polymers aren't the correct answers as they are neither proteins nor do they speed up chemical reactions. They are purely structural terms.

Hope this helps :D

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the answer is   c the cold war