Which phase of Clostridium botulinum produces botulin?
A) Endospores
B) Vegetative cells
B) Vegetative cells
You might also like to view...
If the incidence of Tay-Sachs is 1/3,600 Ashkenazim births, what is the heterozygote (carrier) frequency?
A) 0.0003 B) 0.033 C) 0.286 D) 0.017
Which of the following observations were an outcome of studies by David Tilman and coworkers at Cedar Creek, Minnesota on ecosystem stability? Check all that apply.
_____ Plots with more species showed less year-to-year variation in biomass. _____ Species-rich plots were less affected by drought than species-poor plots. _____ Over-yielding was observed in more recent work at Cedar Creek. _____ Nitrogen uptake and total biomass produced were negatively correlated to species richness. _____ More diverse plots were less susceptible to invasion by new species.
Where do you expect to find thermophiles?
A) In anoxic environments B) In salty environments C) In dry environments D) In hot environments
What types of DNA damage will trigger DNA repair?
What will be an ideal response?