The plasma membrane consists of lipid bilayers and proteins are inserted or may span the membrane bilayer. The carbohydrate are always present in the plams membrane in association with lipids and proteins known as glycolipids and glycoproteins.
The carbohydrate layer on plasma membrane acts as the physical barrier and provide protection against the pathogens. The carbohydrate-selectin present on the plasma membrane helps in the cell recognition and makes its distinct from the normal cells. The cell recognition of carbohydrate molecule is important for the embryonic development as well.
Plants extract CO2 from the air and also use sunlight and water as the reactants of the process photosynthesis. Photosynthesis then produces Glucose and Oxygen. Oxygen is rid of the plant.
The first one, <span>By having white blood cells to attack pathogens. this is because blood also has white blood cells. and the immune system has pathogens. so the blood cells help attack pathogens.</span>