Which term names enzymes in the body that speed up chemical reactions?
A. Concentrations
B. Catalysts
C. Cells
D. Chloroplasts

Catalyst speeds up the chemical reactions. Catalyst is the compound that adds to the chemical reaction so that it happen more quickly. Catalyst without being consumed in the reaction accelerates the reaction. It lowers down the activation energy of the transition state and thus accelerates the reaction.

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its first and third is your answer i did the qustion the fourth isnt right