Cell and City

In many ways, the eukaryotic cell is kind of like a city. I will tell you what each of the organelles in a cell does. Your job will be to try to match each of the cell parts to the parts of a city and explain why they are similar.

a) Golgi Apparatus: packages up proteins and labels them for distribution to other parts of the cell.

b) Vacuole: a container for liquids, food, waste, or other materials. Large in plants, smaller or absent in animal cells.

c) Chloroplast: uses light energy and CO2 (carbon dioxide) from the air to build long chains of carbons (sugars and starches), releasing O2 (oxygen) along the way.

d) Lysosome: a place where waste products and cellular debris are broken down.

e) Mitochondrion: burns food to create ATP, an energy storage molecule which can be used by the whole cell.

f) Nucleus: contains DNA, the instructions for building and operating the cell.

g) Cell Membrane: regulates what enters and leaves the cell.

h) Endoplasmic Reticulum: a network for transporting proteins across the cell.

i) Ribosome: reads the messenger RNA, copied from the DNA instructions in the nucleus, and is the site where proteins are made. Ribosomes are made in the nucleolus.

j) Cell Wall: in plant cells, a tough wall outside the cell membrane that provides protection and structural rigidity, made of cellulose.

This part of a city ...is like this part of a cell ...because...

Animal Cell
Plant Cell

1. Recycling Plant

2. City Hall

3. A Power Station

4. A Factory

5. The Roads

6. The Post Office

7. The City Limits

8. A Warehouse

9. A Farm

10. Fortifications

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Answers: 1d, 2f, 3e, 4i, 5h, 6a, 7g, 8b, 9c, 10j


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