Lipid a causes disseminated intravascular coagulation a. true b. false

A) True

Explanation:

Lipido A, is a lipopolysaccharide (LPS) or endotoxin. These macrophage active substances which secrete interleukins 1, producing fever, tumor necrosis factor causing necrosis and bleeding in various tissues and nitric oxide that causes arterial hypotension. They activate the coagulation cascades, mainly via the C3a pathway and upon activation the Hageman factor which is an activator of the coagulation factor leading to a state of disseminated intravascular coagulation.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.