Why do cells need to store the energy from glucose in the molecules of atp?

How do accessory pigments chlorophyll?

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

How does the carbon cycle involve an exchange of carbon