Most animal cells possess a nucleus ... Mitochondria are tiny parts of cells floating in the cytoplasm where energy is released from glucose from food.

Most animals, including humans, have bilateral symmetry, which means our bodies are pretty symmetrical. At least on the ...

This observation is explained by another key feature of stem cells that is shared between plants and animals, as explained below. The ability of stem cells to constantly generate new tissues has ...

Most animals, including humans ... the very early stage of development -- when a tiny embryo is divided into two parts during a process called gastrulation. This process eventually also helps ...