Distinguish between F+ and F- bacteria
What will be an ideal response?
F+ bacteria contain an F factor or plasmid that is capable of initiating conjugation. F- bacteria contain an F plasmid that possesses a portion of the bacterial chromosome.
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Predict what would happen to the volume of the urine if the descending portion of the loop of Henle ceased to function.
A. The volume of the urine would not change. B. The volume of the urine would increase. C. The volume of the urine would decrease. D. The salt concentration of the urine would remain constant.
What is the main function of RNA?
a. Copying DNA b. Protein synthesis c. Connecting nucleotides d. Storing genetic material
Crustose, fruticose, and foliose are varieties of
A. lichens. B. mycorrhizae. C. rusts and smuts. D. mushrooms. E. yeasts.
You observe that two sympatric species occupy different ecological niches. What kind of barrier originally caused their speciation?
A. prezygotic B. not enough information C. postzygotic