Biology 107 (Dr. Harrington) Problem set 5

Biology 107 B2 - Problem set 5

Question 1 (organization) Make a table of the seven structures that protrude out from cells: fimbrae, sex pili, bacterial flagella, archaean flagella, eukaryotic flagella, cilia, and microvilli. Some suggestions for your table are: (i) structure, (ii) function, and (iii) found on any human cells?.

Question 2 (organization) Make a table of the three types of protein filaments found in a human cell's cytoskeleton. Some suggestions for your table are: (i) protein subunit(s), (ii) shape, (iii) width, and (iv) functions.

Question 3 (organization) Make a table of the five types of cell propulsion we discussed in detail: bacterial flagellar propulsion, bacterial axial filament-mediated propulsion, eukaryotic amoeboid motion, eukaryotic flagellar propulsion, and eukaryotic cilliated propulsion.

Question 4 (exam) What are the similarities and differences between:

a) FtsZ and F-Actin

b) Bacterial flagella and Eukaryotic flagella

Question 5 (exam) This diagram shows Erin the E. coli and a concentration gradient of glucose. Help Erin get to the source of the glucose in the top right corner! To do this draw the path she might take as she alternates between runs and tumbles.