CK-12 Biology Chapter 3 Section 3.1
organelle
any of a number of organized or specialized structures within a living cell
cytoplasm
the material within a living cell except for the nucleus
nucleus
the positive charged central core of an atom
prokaryotic cell
they are unicellular organisms that lack organelles or other internal membrane-bound structures
plasma membrane
a barrier of lipids and proteins that forms the outer side of the cytoplasm of a cell and regulates the passage of molecules
virus
a microscopic parasite which can infect living organisms and cause disease
eukaryotic cell
a organism whose cells contain a nucleus surrounded by a membrane and whose DNA is bound together by proteins into chromosomes
eukaryote
a organism with complex cells, or a single cell with a single structure
ribosome
a small particle consisting of RNA and other like proteins, found in large numbers in the cytoplasm of living cells