Nucleus
Golgi Apparatus
Mitochondria
Endoplasmic Reticulum
Proteins
Quarks
Cells
Organelles
Cell death
Cellular respiration
Cell division
Cellular communication
20
200
400
1000
Aristotle
Captain Hooke
Robert Hooke
James Watson
Cellular parts
Organs
Celluoplasts
Population
Community
Biosphere
Ecosystem
Smooth Reticulum
Chloroplast
92
48
13
11