Models in science are used to help ... Describe the components of plant cells and their functions. Most animal cells possess a nucleus, cell membrane, cytoplasm and mitochondria.

Do similar mechanisms operate in plant and animal stem cells to maintain long-term division and pluripotency? In conclusion, at least some of the genes that control the stem cell state in animals ...

Today, scientists are creating models of human genetic disease using mice, flies, worms, and other animals ... The use of embryonic stem (ES) cells is required for this technology.