What is the role of an enzyme? a. speeds up biochemical reactions b. causes biochemical reactions c. is a product in biochemical reactions d. provides extra heat for biochemical reactions

A. But the best term to use is 'speeds up and biological reaction' - (in chemistry), and a catalyst 'speeds up a chemical reaction' - (in chemistry)

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy