Alphabetical
nucleus
[noun]
1. [Atomic] A tiny, dense positively charged mass at the heart of an atom. The nucleus is composed of protons and neutrons, and contains nearly all of the mass of the atom while occupying only a tiny fraction of the volume. 2. [Cellular] A generally spherical structure encased in a double membrane that is found in most living eukaryotic cells. The nucleus contains hereditary information and directs the growth, metabolism, reproduction, and functioning of the cell.
Appears in modules:
- Atomic Theory I
- Atomic Theory II
- Barbara McClintock
- Cell Division I
- Cell Division II
- Cellular Organelles I
- Chemical Bonding
- Comparison in Scientific Research
- Creativity in Science
- Discovery and Structure of Cells
- DNA II
- Earth Structure
- Energy
- Factors that Control Earth's Temperature
- Franklin Chang Díaz
- History of Earth's Atmosphere I
- Luis Walter Alvarez
- Membranes I
- Modeling in Scientific Research
- Nuclear Chemistry
- Properties of Liquids
- Scientific Controversy
- The Nature of Scientific Knowledge
- The Periodic Table of Elements
- Thermodynamics I
Sign in or register
For an ad-free experience and access the Visionlearning Classroom, sign in or register.
