Question

1. which of these will most likely happen if an enzyme is added to a certain chemical reaction? select two correct answers. the rate of reaction will start to increase. the rate of reaction may speed up or may slow down. the rate of reaction will decrease. the reaction will completely stop. the activation energy will be lowered.

Explanation:

Enzymes are biological catalysts. They lower the activation - energy of a chemical reaction, which generally speeds up the rate of the reaction. They do not make the reaction stop or decrease the rate under normal circumstances.

Answer:

The rate of reaction will start to increase, The activation energy will be lowered