I don’t really understand this question please help :) thank you

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

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

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.