Animal Cells

• nucleus

  contains genetic material that controls the activities in the cell
• cytoplasm

  gel-like substance where most of the chemical reactions happen. contains enzymes
• cell membrane

  holds the cell together and controls what goes in and out
• mitochondria

  where most of the reactions for aerobic respiration take place. respiration transfers energy needed for cells to work
• ribosomes

  these are where proteins are made in the cell