I think its the <span>Prokaryotes cause they lack a nucleus.
Hope this helps. :)</span>
Answer:
Answered below
Explanation:
Cell membranes are barriers which protect and regulate the movement of substances in and out of the cells. It is a semi-permeable and selective structure.
In the passive transport system, substances move along a concentration gradient and it doesn't require energy. The examples of passive transports include; simple diffusion which transports carbon dioxide and oxygen, osmosis and facilitated diffusion which transports charged molecules like ions, sucrose etc.
In active transport, substances move against the concentration gradient. This requires energy. The two main types are: primary active transport, which uses direct metabolic energy e.g Na+/K+ pump, and the secondary active transport system which couples the transported molecules with another molecule moving along the gradient, example the Na+/glucose transporter.
A.Ozone it's O3 and 100% not nitrogen lol
Answer: a light source (sun) and water
Explanation:
Answer:
True, True, True
Explanation:
Not exactly sure what you are asking, but I'm guessing you want confirmation.