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