You have conducted an ames test on a given compound. which of the following would be classified as a positive result on the ames test?

(a) his+ strain grows on an his- plate.
(b) his- strain grows on an his+ plate.
(c) his+ strain grows on either an his- or an his+ plate.
(d) his- strain grows on an his- plate.
(e) his+ strain grows on an his+ plate

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Briefly describe the scenario that was discussed in the behaving brain that demonstrated that the brain can change based on state or mood. which disease could the research involving rats and learning experiments that was discussed in the behaving brain ultimately with? in the behaving brain, what is a common misunderstanding about amnesia that was mentioned? what is the truth about amnesia that's mentioned? what does research discussed in the responsive brain show to be different in men and women's reaction to touch? what was discussed in the responsive brain as being brain-based and a vital part of normal growth and development in young children? in the responsive brain, what do they discuss as a possibility for leading to deficiencies in cognitive impairment as we age? in the responsive brain, what did the research involving african cichlid fish demonstrate? briefly describe the back story and affliction of the author of peter pan. what did you find most interesting about the behaving brain video, and why? what did you find most interesting about the responsive brain video, and w

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic