What if an E. coli cell was the size of the Shriram building at Stanford? If 1 µm = 100 m, we calculate the size of a few biological objects.


Object Size
Bp 3.4 cm
H2O 2.75 cm
GFP 30 cm
Ribosome 200 cm
bilayer 40 cm
T7 580 cm
mRNA ~30 m
Genome 158 km


At the same size scale, we can calculate how fast various cellular components would be moving:

Process Rate (m/s)
RNAP 1.7
DNAP 3.4