What is the energy hill called that reactants must overcome to become products?

If the reactants have less energy than the products, what kind of a reaction must have taken place?

Name the type of reaction in which energy is released along with theformation of products

What name is given to a reaction that takes in energy from the surroundings? Give the full name.

What is the name of a biological catalyst?

n a chemical reaction, the substances present at the beginning are called:  ProductsReactantsCatalysts