Answer:
C
Explanation:
It moves across the cell membrane via simple diffusion, a process that requires no energy input and is driven by the difference in concentration levels on each side of the cell membrane.
The answer is A. <span>Light from the Sun reflects off the Moon as it orbits Earth. Hundreds of thousands of miles lie between the Moon and Earth.</span>
Yes the hypothesis of the sea-floor spreads through the ocean ageing
The material or substance on which an enzyme acts upon is known as the substrate, they are nothing but reacting molecules and or substances that are able to ultimately be converted to product substances. By the aid of biological enzymes, that lower the energy of activation needed for a chemical reaction to proceed.