It prevents harmful substances from entering a cell. I uses carrier proteins to do so.
Answer:
ALS causes the motor neurons to gradually deteriorate, and then die. Motor neurons extend from the brain to the spinal cord to muscles throughout the body.
The answer is that you have to use this formula that is u=Gm/R+h
The portion of a sperm cell that contains digestive enzymes for penetrating he egg is called the acrosome.
I hope this helps.
