Answer:
The answer is B, I believe, because it states here that, "Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction. ... The molecules that an enzyme works with are called substrates. The substrates bind to a region on the enzyme called the active site. There are two theories explaining the enzyme-substrate interaction."
<span>Within the water cycle, the water within the ocean evaporates and is converted into a gaseous form before it is able to enter the atmosphere (Answer A). High in the atmosphere, the water then cools and condenses, forming water clouds that eventually rain back to the ground and ocean. </span>
<span>The ischemic penumbra can maintain metabolic demand with marginal blood flow from collateral circulation for a maximum of 50% before increasing in size. A penumbra is the area where the flow of blood at about 25 - 50% can maintain normal metabolic demands for 6 - 8 hours only. When it continues to increase, the human cells will die and other neurological activity will be suspended causing the person to die slowly.</span>
Pro;Proline
Look up a codon chart up needed
