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.
1. The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. The majority of Earth's volcanoes and earthquakes take place along the Ring of Fire.
2. Crustal recycling is a tectonic process by which surface material from the lithosphere is recycled into the mantle by subduction erosion or delamination
3. Tectonic plate movement can create another supercontinent like Pangea if the plates move continents to the point of meeting together.
Answer:
A
Explanation:
Amoebas reproduce through binary fission which is a form of asexual reproduction.
They are inherited by dominant genes or traits from the parents.
Normally the molecule is RNA or DNA.
