C. calcium is your answer
Enzymes are also known as Biological catalysts. An enzyme working at its maximum possible rate, where the substrate concentration is in excess is <span>V max.
</span><span>The reaction is slow because the molecules are moving slowly and they will not often collide with the active site of an enzyme, so the binding of an enzyme and substrate is rare.</span>
<span>Cyanobacteria, which are blue-green algae, belong to the eubacterial class. Prokaryotes can be autotrophs or heterotrophs. Autotrophs like blue-green algae can make their own food, </span>