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How does RNA polymerase know where to start transcribing a gene into mRNA?
The enzyme that synthesizes RNA (RNA polymerase) binds specific DNA sequencesthat typically lie before the gene being transcribed. When everything it needs to start synthesis is properly assembled (any cofactors, etc.), only then can it begin transcribing DNA into RNA.
A point mutation involves a change in an?
A point mutation is a genetic mutation when a wrong nucleotide bonded to DNA during replication. Usually, DNA polymerase can prevent that because it's an enzyme that finds the right nucleotides to bond to new DNA strands.
What do you call a person who finds cures?
Pharmacologist
What is the attachment site for RNA polymerase?
according to information from http://www.rothamsted.ac.uk/notebook/courses/guide/trans.htm " if the RNA polymerase attaches to a special sequence called a promoter, an additional small protein, the factor sigma, will also attach to the polymerase and lock it on the DNA. The factor 'sigma' will only attach itself to the complex DNA / RNA polymerase when the RNA polymerase is attached to a promoter. Another hypothesis is that the factor sigma attaches to RNApol anyway and the enzyme is then able to slide along the DNA until it finds a promoter. It prevents detaching and speeds up promoter location, and decreases the affinity of RNApol for general regions of DNA. " Therefore, the answer seems to be, RNA attaches to DNA through a small protein called the factor sigma once the RNA polymerase attaches itself to a chain sequence called a "promoter". according to information from http://www.rothamsted.ac.uk/notebook/courses/guide/trans.htm " if the RNA polymerase attaches to a special sequence called a promoter, an additional small protein, the factor sigma, will also attach to the polymerase and lock it on the DNA. The factor 'sigma' will only attach itself to the complex DNA / RNA polymerase when the RNA polymerase is attached to a promoter. Another hypothesis is that the factor sigma attaches to RNApol anyway and the enzyme is then able to slide along the DNA until it finds a promoter. It prevents detaching and speeds up promoter location, and decreases the affinity of RNApol for general regions of DNA. " Therefore, the answer seems to be, RNA attaches to DNA through a small protein called the factor sigma once the RNA polymerase attaches itself to a chain sequence called a "promoter". role of sigmaActually RNA Polymerase can bind to DNA anywhere in the entire genome but sigma factor attaches to polymerase only when it is at promotor. sigma factor dissociates when polymerase crosses promotor. sigma factor stablises the pre initiatiation complex. Actually there are many promoter and many genes but which gene to be transcribed is decided by sigma factor.
What takes place during the decline stage of a social movement?
During the decline stage of a social movement, participation decreases, momentum fades, and support wanes. The movement may struggle to attract new followers or mobilize for actions, causing it to lose visibility and eventually fizzle out.
What is the term that describes sequence of DNA that a restriction enzyme finds and cuts?
Template Sequence
Does a restriction enzyme generate the same size fragments in genomic DNA of different species?
No, restriction enzymes do not always generate the same size fragments in genomic DNA of different species. The specific DNA sequences recognized by the enzyme and the distribution of those sequences in the genome will determine the size and distribution of the fragments produced. Differences in genome size, organization, and sequence between species will result in variation in fragment sizes.
What are restriction enzymes?
Restriction enzymes (also known as restriction endonucleases) are proteins which cut DNA up at specific sequences in the genome. For example, the commonly used restriction endonuclease EcoRI recognizes every point in DNA with the sequence GAATTC, and cuts at the point between the Guanine and Adenine. Interestingly, the recognition sequences for most restriction endonucleases are genetic palindromes, e.g., the sequence reads exactly the same backwards on the complementary strand. In the case of EcoRI, the two complementary DNA strands for the recognition sequence are: 5'--GAATTC ---3'3'--CTTAAG--5'
What is the main sequence of main events in unwind?
Connor finds out he is going to be unwound
What is the adverb in the sentence unable to relight the fire the man again finds himself in serious trouble?
Again describes finds
Where in the book lightning thief do you find the part where it describes Zeus' Master Bolt and Hades' Helm?
In the first book. Annabeth describes the helm, and when Percy finds the master bolt in his backpack he describes it.
What Niall Horans personality?
funny and jokey. finds everything hilarious. describes himself as immature
Is Edward Cullen happy when he finds out bella is pregnant?
Edward goes into shock when he finds out she is pregnant. When Jacob describes Edward he calls him 'the burning man' because he looks really depressed.
What best describes the dramatic situation of ode to enchanted light?
the narrator finds the fall of light beautiful and amazing
What is an indicators and Enzyme test?
An indicator and enzyme test determines if DNA matches. It is used most frequently when DNA is found at a crime scenes and then needed to match a suspects. The Enzymes breaks up the DNA and finds matches in the code (nucleo tides). The indicator then identifies where the matches are.
How does holden describe mr and mrs Spencer?
Holden describes Mr. Spencer as old and boring, while he describes Mrs. Spencer as "old and decrepit." He finds them both to be out of touch with his feelings and disinterested in his well-being.
What best describes the dramatic situations in this poem?
The speaker is contemplating grief.the speaker is contempting griefthe narrator finds the fall of light beautiful and amazing
