In many oxidation-reduction reactions, electrons pass in pairs from the active site of the enzyme to a(n) what that serves as an electron acceptor, which can then release the electrons to the substrates of another reaction.

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer