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