Almost all animals and plants are made up of cells. Animal cells have a basic structure. Below the basic structure is shown in the same animal cell, on the left viewed with the light microscope, and ...

Animals depend upon plants as an energy source. Chemicals in food are broken down in respiration to create energy stores that can be used by the cell. Animal cells have a basic structure. Below the ...

THE beta cells of the islands of Langerhans have a dominant role in the regulation of normal carbohydrate metabolism. These cells serve as depots of insulin reserve stored within their cytoplasm in ...

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.

Jeremy Berg does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Proteins carry out many of an organism's critical functions, and they are coded for by genes. To make a protein from a gene, a cell first needs a copy of the gene in the form of a molecule called RNA.

Glycans are essential to virtually every biological process in the body. These complex structures—composed of interlocking sugar molecules—adorn the surfaces of cells in fuzzy profusion. Glycans are a ...

Before pinpointing the most highlighted structure, let's first dissect the intricate architecture of a skeletal muscle fiber.