#Question id: 8942
#Unit 9. Diversity of Life Forms
#Question id: 10826
#Unit 10. Ecological Principles
Gause's principle of competitive exclusion is, essentially,
#Question id: 9225
#Unit 9. Diversity of Life Forms
Use the following figure to answer the question
In looking at the species-area plot in the figure, what can be concluded?
#Question id: 1356
#Unit 4. Cell Communication and Cell Signaling
Which of the following cell types might have the highest number of desmosomes?
#Question id: 2838
#Unit 2. Cellular Organization
You want to study the potential interaction between nucleosome-bound DNA and a specific histone deacetylase. You decide to perform an electrophoretic mobility shift assay (EMSA). You use a 32P end-labelled, linear template DNA that contains two nucleosome positioning sites. You assemble two nucleosomes on the DNA template before incubation with and without the histone deacetylase. For some reactions, you use unmodified nucleosomes. For other reactions, you use nucleosomes that are methylated at lysine 36 of the histone protein H3.
A. The histone deacetylase binds nucleosome bound-DNA in lanes 1, 2, 3, and 4.
B. The histone deacetylase binds nucleosome bound-DNA in lanes 3& 4.
C. The histone deacetylase seems to recognize methylated nucleosomes at lysine 36 of histone H3 in lane 1, 2 & 3 better than unmethylated nucleosomes in lane 4 &5
D. The histone deacetylase seems to recognize methylated nucleosomes at lysine 36 of histone H3 in lane 1 & 2 better than unmethylated nucleosomes in lane 3 &4