A) proton: positive charge
Answer:
D) Tight junctions
Explanation:
Based on the information provided within the question it can be said that the structure that performs this function are known as tight junctions. This structure has two different functions. The first being to limit the passage of molecules and ions through the space between cells, and the second function is that is blocks the movement of important membrane proteins between the epithelial cells
Answer:
Because you body is introduced to the virus, it is familiar to it and can build up an immunity to the weakened form so when the actual virus invades, your body know what to do.
Explanation:
Answer:
Larger organisms have the same size cells as we do. They just have many more of them.
Explanation:
Hope this helps!
I would say, C. Because an controlled variable is an experimental element which is constant and unchanged throughout the course of the investigation.
