Which is a part of the cell theory? cells come from pre-existing cells cells have a nucleus organisms with one cell must be seen with a microscope organisms must have more than one cell to live

cells come from pre-existing cells

The cell theory was proposed by Matthias Schleinden and Theodor Schwann during 1838–39. It states that all the living beings are composed of cells, they are the basic structural and functional unit of all the living organisms, and all cells have come from the previously existing cells.

On the basis of the above information, cells come from pre-existing cells is a part of the cell theory.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.