Pulmonary surfactant is a mixture of lipids and proteins which is secreted into the alveolar space by epithelial type II cells. The main function of the surfactant is to lower the surface tension at the ir/liquid interface within the alveoli of the lung. In babies born prematurely, pulmonary surfactant may not be present in adequate amounts due to insufficient exocytosis in type II alveolar cells.
Rocks are made up of minerals
For the 3rd one I think E
Answer:
after a vaccine is injected the body creates an immune response that produces memory cells so next time a pathogen invades the body is prepared
Temperature and moisture are key factors in determining where each of the seven vibgyor or colors occur.
