Two types of cells are shown below. What molecules are sent to from Cell A to cells in B in order for the muscle to move? *

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

the wires in the toaster turning red and the toast crisping and turning brown

the answer is:

carbon dioxide