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 an his – plate.
D) his+ strain grows on an his+ plate.
E) his+ strain grows on either an his – or an his+ plate.
A
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A member of subphylum Chelicerata is a spider
____________________ Indicate whether the statement is true or false.
Which of the following was NOT a kingdom in Linnaeus's taxonomy?
A. Animal B. Mineral C. Protist D. Plant
The lactose analog isopropyl-beta-D-thio-galactoside (IPTG) is often used to regulate gene expression systems in bacteria. IPTG does not act as a substrate for beta-galactosidase, but can bind to, and inactivate, the repressor. In this case, IPTG serves as a(n)
A. inducer. B. repressor. C. DNA-binding protein. D. operon. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about prokaryotic transcriptional regulation? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following is not a component of eukaryotic recombination?
A. Spo11 B. RuvAB C. Rad50 D. Sgs1 E. Dmc1