Compare DNA methylation to histone acetylation
What will be an ideal response?
DNA methylation and histone acetylation are two types of transcriptional regulation. Histone
acetylation is a highly reversible way of granting transcription machinery access to a promoter. DNA
methylation by itself is reversible but can be permanent when paired with additional chromatin
modifications. Unlike histone acetylation, DNA methylation can be preserved from one generation to
the next.
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There are many potential ways to reduce the amount of inorganic fertilizer that is applied to cropland. If you were to make recommendations on the use of inorganic fertilizer application to a crop, what are some of the variables and processes you would consider?
What will be an ideal response?
Carbon dioxide is transported in human blood primary in which of the following ways?
A. As oxyhemoglobin B. As bicarbonate ions C. Attached to plasma proteins D. Attached to the amino groups of hemoglobin E. Attached to the heme groups of hemoglobin
Lichens grow in a variety of habitats including rocks and tree trunks, and exist as a symbiotic association of algae or cyanobacteria and a fungus. The fungus provides anchoring, moisture, and minerals for the algae, and the algae performs photosynthesis providing sugars to sustain the fungus. The relationship between the fungus and algae is an example of
A. mututalism. B. a predator-prey relationship. C. parasitism. D. microbial antagonism. E. commensalism.