Organ, blood, and bone marrow transplants are lifesaving procedures that come from what sources?

Well usually the source for all three (organs to a certain extent; 1 Kidneys, portions of liver, 1 Lung, Skin and or hair) can be taken from a live donor. This usually preferred.

However certain organs such as the heart, or any organ in particular can be gotten from a donor who has experienced brain death to the point where they are clinically dead

Holozoic nutrition refers to the regular animal nutrition mode whereas saprophytic nutrition refers to the nutrition mode of fungi and bacteria.