Providing energy. Carbs are a quick source of energy and easily broken down. Lipids are stored energy that can be broken down when needed. Both provide energy but in different ways
I believe it's B. Apologies if I'm wrong.
Answer:
Enzymes bring reactants together so they don't have to expend energy moving about until they collide at random. Enzymes bind both reactant molecules, called the substrate, tightly and specifically, at a site on the enzyme molecule called the active site
Explanation:
A for you'res but for mine the answer was
Its absence would affect many organisms in the community
