The phospholipid bilayer is a universal component of all cell membranes. Each phospholipid molecule has a hydrophobic(water repelling) and a hydrophilic( attracted to water) end. This allows the phospholipids to arrange themselves in a way that makes a cell membrane not able to dissolve in water. The bilayer is also semi-permeable which allows only certain molecules to enter the cell.
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The answer is B.
neutral: OH- = H+
acid: H+ > OH-
base OH- > H+
Answer:
Stimulation of thoracic or lumbar spinal regions; impulse reaches chain ganglion; acetylcholine release
Explanation:
An antigen is recognized by lymphocytes to be foreign and causes an immune response. It is important to know about the immune system of the body as well. The immune system is the system that recognizes and defends itself against any viruses, bacteria or any other harmful foreign bodies.