Scale Model Of A Cell
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1
2Name: _________________
Date: _________________
Period: _________________
Scale Model of a Cell (A)
Cells come in many different shapes and sizes. Most are so small that they are measured in micrometers (µm) or
microns. One micron is equal to one millionth of a meter or one thousandth of a millimeter. Because they are so small,
you need a microscope to see most cells, so our scale models will be much larger than the average cell. The scale of our
model is 1 µm: 0.5 cm. That means that each µm in a real cell will be equal to 0.5 cm on our model.
Materials:
Calculator
Metric Ruler
Model or poster supplies
Calculate:
Complete the table to find out how large the organelles on your model should be.
Organelle
Average Size (µm)
Size x Scaling Factor
Model Size (cm)
Average Cell
30 µm diameter
30 µm x 0.5 cm/ µm
15 cm
Nucleus
10 µm diameter
1.
2.
(round)
Nucleolus
2 µm diameter
3.
4.
(round)
Mitochondria
6 µm long x 1 µm wide
5.
6.
(oval)
Lysosome
2 µm diameter
7.
8.
(round)
Endoplasmic Reticulum (ER)
4 µm out from nucleus
9.
10.
Golgi Complex
1 µm long x 1 µm wide
11.
12.
(membranes have thickness
of ER)
Central Vacuole (plant cells)
14 µm wide x 20 µm tall
13.
14.
Ribosomes
(no scale – make tiny dots)
Chloroplasts
5 µm diameter x 2 µm thick
15.
16.
(plants only – disc shaped)
Cell Wall (plants only)
(no scale – make thin line)
Cell Membrane
(no scale – make thin line)
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