Q60
General ScienceBiology
The size of E.Coli bacteria is
- a.2000 nm.
- b.200 nm.
- c.20 nm.
- d.2nm.
Answer: (A) 2000 nm.
Escherichia coli is a rod about 2 µm long and 0.5 µm wide, and 2 µm is 2000 nm. 200 nm and 20 nm are the size range of viruses, and 2 nm is about the width of DNA.