The Structure of the Nucleus The electrons in an atom tend to occupy distinct shells. What about particles in the nucleus? The "magic numbers" of the isotope chart suggest that they also have a shell ...

AMES, Iowa – Allen Lawrence, wrapping up a long career as an electrical engineer, was serious about moving his astronomy hobby beyond the 20-inch telescope he’d hauled to star parties under the dark ...

Scientists at Fred Hutchinson Cancer Research Center have found a protein that helps shape the nucleus, a special compartment within cells that houses and controls genetic information. When cells are ...

The basic building blocks of all living things are cells. The body of humans is made up of trillions of cells. Plants and animals are made up of cells. They are considered as the basic units of life.

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.

There are 118 elements. Each element is unique by virtue of the different numbers of electrons, protons, and neutrons its atoms contain. Isotopes are atoms of a given element that vary only in the ...