In addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus, and lysosomes.

As viewed from a human perspective, nature has done some ingenious engineering to overcome some of the obstacles it has faced. Take the evolution of sex, for instance. To make the move from ...

The presence of two types of hair cells, the inner and outer hair cells, in the organ of Corti was appreciated nearly a 100 years ago but the function of the two has only become clear in the last 20 ...

As the embryo grows and develops, its stem cells divide to produce cells that develop into the different types of specialised cell it will need to make functioning tissues and organs. Figure ...

Cells manage a wide range of functions in their tiny package — growing, moving, housekeeping, and so on — and most of those functions require energy. But how do cells get this energy in the ...

https://doi.org/10.1086/323902 • https://www.jstor.org/stable/10.1086/323902 ABSTRACT Spectroscopic observations of the M supergiant star Betelgeuse were taken at ...