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A scientist clones a regulatory gene that is involved in controlling the expression of other genes, and discovers that the regulatory gene encodes a histone deacetylase enzyme. It is likely that this enzyme regulates gene expression by:
A.Causing tighter packing of the chromatin at the target gene, thereby inhibiting transcription B.Causing looser packing of the chromatin at the target gene thereby inhibiting transcription C.Causing tighter packing of the chromatin at the target gene, thereby enhancing transcription D.Causing looser packing of the chromatin at the target gene, thereby enhancing transcription E.Causing tighter packing of the chromatin at the target gene, thereby inhibiting translation.
As a laboratory assistant you were asked to determine the total number of bacteria in the urine of a person with a urinary tract disorder.
Ion concentrations have a impact on whether there is dissolution of minerals. Microorganisms can alter the charges on their cell surfaces to enhance these processes.
How do cadherins, IgSF members, and selectins differ at the molecular level in the way they mediate cell-cell adhesion?
Now that you've arrived at the lung, describe the structures you see and narrate how the body combats the invading bacterium using the knowledge you have grinded in the first 4 units. Address both specific and nonspecific immunity and the cells that ..
Your friend has now joined a lab that studies vesicle budding from the Golgi and has been given a cell line that does not form mature vesicles. He wants to begin designing some experiments but wasn't listening carefully when he was told about the mol..
The UV absorption in proteins at 280 nm is largely due to tryptophan residues. The molar extinction coefficient of tryptophan is 5380 M-1cm-1. Exactly 0.25 g of a protein is dissolved in 200 milliliters of a neutral buffer.
Which pair will have been likely to agree that strata such as those depicted here were deposited gradually over long periods of time by subtle mechanisms that are still at work?
Why can prakaryotes quickly re infect a patient if they are not wiped out? How may this result in the evolution of drug resistant pathogens.
Determine the final guaiacol concentrationg of the following enzyme reaction solutions listed in the table below. Keep in mind that each reaction solution has a total volume of 2000 microliters.
In a cell about to undergo meiosis there are 2-pairs of homologous chromosomes. Genes D and d occur on different members of one pair of chromosomes.
In a large interbreeding population 81% of the individuals are homozygous for a recessive character. In the absence of mutation or selection, what percentage of the next generation would be homozygous recessive? Homozygous dominant? Heterozygote?
As raise in human population lead to expansive industrialization and cultivation, increased carbon emissions are resulting in global climate change.
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