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