It is called the plasma membrane. An infinitesimal film of lipids and proteins which shapes the outside limit of the cytoplasm of a cell or encases a vacuole, and controls the entry of atoms all through the cytoplasm.
The essential capacity of the plasma layer is to shield the cell from its environment. Made out of a phospholipid bilayer with implanted proteins, the plasma film is specifically penetrable to particles and natural atoms and manages the development of substances all through cells.
Answer: Each body segment of an earthworm contains four pairs of setae, which are used to move the worm. The setae of marine worms are found in bundles. Leeches do not have setae at all.
With a compromised immune system, people have a far more difficult time fighting off disease. Due to this, their bodies are more vulnerable to getting such diseases and cannot create the antibodies needed to fight the disease off.
