Light excites the electrons in chlorophyll a molecules of photosystem 1. As these electrons move to another primary electron receptor, electrons from photosystem 2 replace them.
Therefore the answer is FROM PHOTOSYSTEM 2.
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The faster the rate enzymes speed up reactions by lowering activation energy
All known living things are made up of one or more cells<span>.
All living </span>cells come<span> from existing </span>cells<span> by division.
The </span>cell<span> is the fundamental unit of structure and function in all living organisms.</span>
Carbon is released as carbon dioxide during respiration.
The main function of the large central vacuole in plant cells is to provide structural support; however, it serves other functions such as protection, storage, growth and waste disposal.
