Which of the following is NOT based on nucleic-acid hybridization?
A) DNA chip
B) FISH
C) PCR
D) Southern blotting
E) Western blotting
E
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What is the main difference between a disturbance and a disturbance regime?
A) A disturbance regime includes defining the predictable frequency and severity of the disturbance. B) A disturbance regime includes defining the length of the disturbance. C) A disturbance regime is a more specific type of disturbance. D) They are essentially the same thing.
A double stranded DNA strand contains 26 pyrimidines. How many purines will the copied strand contain?
A. 0 B. 13 C. 26 D. 52 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 know about base pairing? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
Tacrolimus (FK-506) is a drug that inhibits an enzyme called calcineurin. Calcineurin is a protein phosphatase. This is an enzyme that dephosphorylates (removes phosphate groups) from proteins. When added to cells, tacrolimus can inhibit the dephosphorylation of a protein called NFAT, but it cannot prevent the dephosphorylation of a protein called CDK1. What is the most likely explanation for this finding?
A. Calcineurin requires an additional cofactor to dephosphorylate NFAT B. NFAT is a substrate of calcineurin, but CDK1 is not C. Tacrolimus is a competitive inhibitor of calcineurin for NFAT and CDK11 D. Tacrolimus changes the optimum pH for calcineurin Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about phosphates and enzymestructure? What other information is related to the question? Choose Answer Do you have all necessary information to analyze how tacrolimus works on NFAT and CDK1? 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?
If this molecule is destined to deliver an arginine to a ribosome for incorporation into a growing polypeptide, which one of the following 3' to 5' sequences would not be found in the region labeled (C)?
A. GCA B. GCC C. UCU D. AGG E. UCC