Question

1. enzymes are typically which type of biomolecule? 3. describe the effects that enzymes can have on substrates.

Explanation:

Enzymes are proteins that act as biological catalysts. They lower the activation - energy of chemical reactions involving substrates, increasing the reaction rate.

Answer:

1. Proteins
2. Enzymes lower the activation - energy of substrates, increasing the rate of chemical reactions that the substrates are involved in.