unlabelled simple diagram of an animal cell all organelles and cell components suspended within. Facilitates the movement of materials within the cell. 3. Nucleus The control center of the cell. Contains genetic material (DNA) organized into chromosomes. Surrounded by a nuclear envelope with nuclear pores for material exch S Sherri Auer Jun 6, 2026
respiratory system unlabelled diagram respiratory passages, highlighting the expansion and contraction of the lungs during breathing. What role do the alveoli play in the respiratory system as depicted in the diagram? Alveoli are tiny air sacs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxi D Delmer VonRueden Jun 5, 2026
