The logical conclusion that can be drawn from Wilcove's experimental data in the graph above is that
____.
a. songbird nests in a variety of habitats are equally likely to be found by predators
b. songbird nests in forest fragments are more likely to be found by predators than those in
intact tracts of forest
c. songbird nests in forest fragments are less likely to be found by predators than those in
intact tracts of forest
d. songbird nests in rural areas are more likely to be found by predators than those in
suburban areas
e. songbirds that nest on the ground are more vulnerable to predators than those that nest in
trees or shrubs
B
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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?
Heavy methylation of lysines in histone tails is usually associated with repression of transcription
A. true B. false
The polysaccharides agarose and carrageenan are isolated from red algae for commercial use. These polysaccharides are found in cell walls. What plant polysaccharide are they analogous to?
A. Mannose B. elastin C. Cellulose D. Collagen E. Amylose
If you were grading an exam about water, which statement would lose points?