Which of the following is NOT one of the main components of the cell theory? 1. cells must contain cell walls 2. all living things are made of cells 3.cells can only come from other cells 4. cells are the basic unit of life

It is #1

Explanation:

That is definitely not a part of cell theory, I remember this from last year in 7th grade!

b, acidosis

acidosis is when the human body attempts to return the bloods ph levels back to normal when the blood is acidic

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.