The document describes the main parts of animal cells including the cell membrane, endoplasmic reticulum, nucleus, ribosomes, Golgi bodies, mitochondria, lysosomes, nuclear membrane, and vacuole. It also notes that plant cells contain chloroplasts and a cell wall, which animal cells do not have. The chloroplasts perform photosynthesis and are green, while the cell wall protects the cell and gives it a rigid shape.