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