Explanation:
The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Answer:
Intertidal zone
Explanation:
Intertidal zone is present between low and high tide and hence, it can be above or below water. The zone is characterized by presence of nutrients and abundant oxygen as well as availability of light. The zone exhibits fluctuations in salinity and temperature as caused by waves.
Other types of enzymes can put atoms and molecules together. Breaking molecules apart and putting molecules together is what enzymes do, and there is a specific enzyme for each chemical reaction needed to make the cell work properly.
https://science.howstuffworks.com/life/cellular-microscopic/cell2.htm
Answer:
The answer is Paleozoic Era
