Answer:
Microscopic examination of an animal cell reveals the presence of a plasma membrane, but no cell wall. Other structures that would normally be present within this cell include a nucleus, endoplasmic reticulum, Golgi apparatus, mitochondria, vacuoles, and lysosomes. Additionally, animal cells usually contain cytoskeletons, which are composed of various proteins such as microtubules and actin filaments that provide structure and support to the cell.