Dendritic cells and macrophages kill by ingestion and destruction of particulate matter in a process called phagocytosis. Dendritic cells and macrophages kill by ingestion and destruction of particulate matter in a process called phagocytosis. True False

The statement is true

Explanation:

Hematopoietic stem cells give rise to myeloid progenitor and lymphoid progenitor and these two progenitors give rise to many immune cells. Dendritic cells are produced by both the progenitors and macrophages are produced by myeloid progenitor.

Both macrophages and dendritic cells are phagocytes. In phagocytosis, the foreing particles are injected by these phagocytes and they are destryoyed by the action of digestive enzymes present in these phagocytic cells.  

Macrophages are present in tissue and if they are present in blood they are called monocytes. Therefore the statement is true.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.