Answer:
Remarkably efficient alveolar macrophages crawl freely along the internal and external alveolar surfaces
Explanation:
The alveolar macrophages are present on the internal lumenal surfaces of the alveolar ducts, the alveoli, and the bronchioles.
Alveolar macrophages are phagocytes that uses several surface receptors to release many secretions, to interact with other cells and molecules.
But the alveolar macrophages are intact to the inner surface only and do not crawl freely along the internal and external alveolar surfaces.
Hence, the correct option is " C".
Answer:
A stream channel is the physical confine of a stream consisting of a bed and stream banks. Stream channel development is controlled by both the water and sediment movement.
The correct answer is fungi because fungi are organisms that survive on decomposing organisms
Human's have 22 pairs of autosomes. Females have two copies of the x-chromosome.
