uiny questions must be completed in lab or at home, and submitted in lab next we
ID: 150424 • Letter: U
Question
uiny questions must be completed in lab or at home, and submitted in lab next week. They will be combined with questions 1, 3 & 7 as your lab report for this week The general approach to these questions is illustrated in two worked examples in the lab PowerPoint, posted on Blackboard as a PDF file. stion 1. Escherichia coli and your cells 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 um (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 um "tall." If the londest dimension of SI 240 (the Bio 201 lab room) represents the 25 um 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? The common cold is caused by a virus, commonly a rhinovirus. The infective stage of neere fer example) is shaped like a small stion 2. Escherichia coli, your cells,& virusesExplanation / Answer
As the length of E.coli is 2 micrometer and width is 0.25 micrometer. So, the volume is L*B or 2*0.25= 0.5 cubic micrometer. So thats big the E.coli is.
Now, the size of eukaryotic intestinal columnar epithelial cells is 25 micrometers, comparing it with 2 micrometer length of E.coli. The eukaryotic epithelial cell is 11.5 times larger than E.coli
This number comes from the formula : x + Nx = P, where x is the initial smaller number, N is the times increase and P is the final bigger number.
So, 2+ N(2) = 25
N= 23/2 = 11.5
N = 11.5
Hope it helps, Good luck !!!
Please do press like !!! :)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.