Escherichia coli, usually abbreviated as E. coli, comes to our attention when we hear about local beaches being closed for swimming due to high “fecal coliform” counts, meaning the water is too contaminated with sewage. E. coli lives in the lower intestine of warm-blooded animals.
E. coli is a rod-shaped bacterium (prokaryote) that is about 2 µm (micrometers) long.
E. coli is a prokaryote. You are a eukaryote. Eukaryotic cells can vary in size but the absorptive cells that line the cavity of your small intestine are columnar in shape and are about 25 µm “tall.”
If the longest dimension of SI 240 (the Bio 201 lab room) represents the 25 µm length of the columnar epithelial cells of your intestine, how big would an E. coli be? Express this as a measurement and as a familiar object close the “scaled-up” size.
By how many times is the eukaryotic epithelial cell larger than the E. coli?
Answers
Answer:
Explanation:
Escherichia coli, usually abbreviated as E. coli, comes to our attention when we hear about local beaches being closed for swimming due to high “fecal coliform” counts, meaning the water is too contaminated with sewage. E. coli lives in the lower intestine of warm-blooded animals.
E. coli is a rod-shaped bacterium (prokaryote) that is about 2 µm (micrometers) long.
E. coli is a prokaryote. You are a eukaryote. Eukaryotic cells can vary in size but the absorptive cells that line the cavity of your small intestine are columnar in shape and are about 25 µm “tall.”
If the longest dimension of SI 240 (the Bio 201 lab room) represents the 25 µm length of the columnar epithelial cells of your intestine, how big would an E. coli be? Express this as a measurement and as a familiar object close the “scaled-up” size.
By how many times is the eukaryotic epithelial cell larger than the E. coli?