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You are studying the expression of a proto-oncogene in a cancer cell and comparing it to expression in a non-cancer cell. You have done experiments to detect the presence of the proto-oncogene (DNA), the messenger RNA, and the protein in both cell types. Both cells have two copies of the gene. The non-cancer cells contain no RNA and no protein corresponding to the gene, but the cancer cells have abundant RNA and protein corresponding to the gene. How can these observations be explained?A) by regulation of mRNA degradation onlyB) by transcriptional and translation regulationC) regulation by either transcription or mRNA degradationD) by transcriptional regulation only
Type in the correct number for each question in the text box provided. Consider the synthesis of one molecule of glucose. How many molecules of ATP are required? Answer How many molecules of NADPH are required? Answer How many turns of the Calvin ..
Eighteen museum specimens of the extinct great Auk were used to amplify coxI, a mitochondrial gene for cytochrome oxidase. DNA sequence analysis of 600 nucleotides of coxI revealed 5 alleles and the number of nucleotide differences between them are s..
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Explain one thing in biosphere you would like to modify. Why do you feel this way? What do you think can be accomplished to implem..
In what ways are species more "fluid" than even 20th century biologists might have believed? To what extent was Darwin's explanation of species as "convenient constructions" accurate? Are species real.
There are four main categories of molecules of life. Complete the table given by indicating, the name of each of the four categories of the molecules of life
Electrocardiogram results demonstrate a shortened QT interval and an rise in the P-R interval. Laboratory results indicate that his serum potassium level has increased to a value of 6.5 mEq/L.
Suppose that every non sterilized individual makes exactly ten gametes. Determine the total number of gametes?
In another population of butterflies, you do a survey and find that out of 5000 individuals you examine, only 4 had curly antennae. What would you expect the frequency of heterozygotes to be in this population? What about the frequency of homozygo..
What is the portal for selective export of mRNA out of the nucleus? When microtubules grow out of a centrosome, which end is oriented away from the centrosome?
Describing how you would test the hypothesis. Start by examining the living species around you. Ever wonder why the pollinator is attracted to the particular flower.
How are carbohydrates important in RNA and DNA. What is their function in body organs and nerve cells? Do you know of any other functions?
Question: The genomes of (+) RNA viruses can be translated immediately upon cellular entry, even though they do not possess a 5' 7-methylguanosine cap due to the presence of this structure at the 5' end of the genome [x]
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