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The chemical form of energy that is useable by the cell to do work

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because