Signs and symptomsEdit. PCS has consistent characteristics. Its symptoms begin with a sudden onset of anterior chest pain on the left side of the chest. The pain is localized and does not radiate like heart attack pain typically does. Breathing in, and sometimes breathing out, often intensifies the pain. Moving also intensifies the pain.
It's in all the science books. Cells are the basic unit of structure and function of the human, animal, and any other living thing. The cells travel through carrying oxygen and everything else that your body, and brain, needs. Cells are a small unit just like a living matter.
Confidence votes 95. Cells are the basic structure of life which make up tissues in which make up organs then make up organ systems which help carry out life's basic tasks. Cells are the smallest unit of life, but they make up everything else, so they play a very big role.