A cell wall provides the cell with both structural support and protection, and also acts as a filtering mechanism.
Cell membrane protects the cell by acting as a barrier. regulates the transport of substances in and out of the cell.
receives chemical messengers from other cell. acts as a receptor. cell mobility, secretions, and absorptions of substances.
T cells ( The thymus cells) and B cells ( The bone marrow) are the major cellular components of the adaptive immune response . T cells are involved in cell- mediated immunity , whereas B cells are primarily responsible for humoral immunity
Your body can produce the most effective weapons that are against the invaders, which may be bacteria, viruses or parasites. Other types of T-cells recognise and kill virus-infected cells directly. Some help B-cells to make antibodies, which circulate and bind to antigens. A T-cell (orange) killing a cancer cell (mauve).
The cell membrane contains proteins that transport ions and water-soluble molecules into or out of the cell. Many cellular functions, including the uptake and conversion of nutrients, synthesis of new molecules, production of energy, and regulation of metabolic sequences, take place in the membranous organelles.
The cell wall is semi-permeable.The membrane is permeable and controls the movement of the substance into and outside the cell. That is, it can allow water and other substance to pass through selectively. Functions include protection from the external environment.
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functions of the cell membrane
and cell wall....