The graph shows the percentage of the cell that mitochondria fill by volume. The greater the percentage, the more mitochondria. What is the function of mitochondria? Why do heart cells have a higher percentage of mitochondria than liver and pituitary gland cells?

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.