The bacterium Escherichia coli (or E. coli) is a single-celled organism that liv

Question

The bacterium Escherichia coli (or E. coli) is a single-celled organism that lives in the gut of healthy humans and animals. When grown in a uniform medium rich in salts and amino acids, these bacteria swim along zig-zag paths at a constant speed of 20 um/s. The figure shows the trajectory of an E. coli as it moves from point A to point E. Each segment of the motion can be identified by two letters, such as segment BC.
Express your answers using two significant figures, separate them with commas. Express your answers using two significant figures, separate them with commas. Part C Express your answers using two significant figures, separate them with commas. Part D Express your answers using two significant figures, separate them with commas.   ,   =   

Explanation / Answer

Hi,     The diplacement between two points is the difference in co-ordinates of the two points. Co-ordinates of different points from the graph: A = (0, 0); B = (50, 10); C = (50, 20); D = (90, 30); and E = (40, -20). all expressed in micro meters. a) AB = (50-0, 10-0) = (50, 10). => xAB = 50 µm, yAB = 10 µm. b) BC = (50-50, 20-10) = (0, 10) => xBC = 0 µm, yBC = 10 µm. c) CD = (90-50, 30-20) = (40, 10) => xCD = 40 µm, yCD = 10 µm. d) DE = (40-90, -20-30) = (-50, -50) => xDE = -50 µm, yDE = -50 µm. Hope this helps you. c) CD = (90-50, 30-20) = (40, 10) => xCD = 40 µm, yCD = 10 µm. d) DE = (40-90, -20-30) = (-50, -50) => xDE = -50 µm, yDE = -50 µm. Hope this helps you. d) DE = (40-90, -20-30) = (-50, -50) => xDE = -50 µm, yDE = -50 µm. Hope this helps you.

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