A eukaryote is any cell or organism that possesses a clearly defined nucleus. Eukaryotic cells form the foundation of complex, multicellular life, including apple trees, mushrooms, fish and humans.

Most life on Earth depends upon plants for energy. Plants capture light from the sun and use it to build up chemical stores of energy. This is called photosynthesis. The basic structure of a plant ...

Cells are the building blocks of life, and they come in various shapes and sizes. All living organisms are made up of cells and these cells have various similarities and differences. They are ...

One of the most fundamental differences between animal and plant cells is the cell wall—a rigid structure surrounding the plant cells. The cell wall provides strength and structural support, but it ...