Twitching or gliding motility involves
A. type IV pili.
B. movement of slime.
C. axial fibrils.
D. both type IV pili and movement of slime can be involved in twitching or gliding motility.
Answer: D
You might also like to view...
You are exploring a distant planet and find an interesting ecosystem in a lake of liquid methane. Tiny organisms, which you call “quiddles”, are able to use the methane to produce carbon sugars. Other organisms, (widdles), consume the quiddles. You discover that an average widdle weighs three times as much as an average quiddle, and that there are more widdles than quiddles per square meter of the lake. How would you describe the ecological pyramids based on these results?
A. An inverted pyramid of energy, and an inverted pyramid of biomass B. A standard pyramid of numbers, and a standard pyramid of biomass C. An inverted pyramid of numbers, and an inverted pyramid of biomass D. A standard pyramid of numbers, and an inverted pyramid of biomass
Which of the following causes a dividing cell to pinch in two by contracting like a purse string?
A. centrioles B. actin filaments C. microtubles D. pili E. intermediate filaments
One of the greatest challenges in development of antivirals is finding drugs that are
A. absorbed by the GI tract. B. administered orally. C. selectively toxic for viruses. D. not likely to disrupt the normal microbiota of the patient.
The (Actinobacteria/alphaproteobacteria/Archaea) do not include any known pathogens.
Fill in the blank(s) with the appropriate word(s).