A look at the cells of different organisms and a comparison of the structures found in plant and animal cells. All animal cells are surrounded by a membrane which contains the cytoplasm.

Plant cells have some specialized properties that make them distinct from animal cells. Learn how special structures, such as chloroplasts and cell walls, create this distinction.

While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions (Figure 1). In prokaryotic cells, DNA bundles together in a region called the nucleoid. Primitive ...

Planar cell polarity (PCP) is a mechanism that aligns cells across animal tissues, ensuring they are pointed ... This ...

But filopodia can also wreak havoc: metastatic cancer cells use them to invade new regions of the body. Filopodia are composed of hexagonal bundles of proteins that give them structure and strength.

A look at the cells of different organisms and a comparison of the structures found in plant and animal cells. All animal cells are surrounded by a membrane which contains the cytoplasm.