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What is the role of the sigma factor in the process of RNA synthesis initiation by RNA polymerase?A. The sigma factor is responsible for terminating RNA synthesis by recognizing the terminator sequence.B. The sigma factor recognizes the promoter of a gene and helps RNA polymerase bind to the DNA to initiate transcription.C. The sigma factor synthesizes RNA by adding nucleotides to the growing RNA strand.D. The sigma factor re-associates with RNA polymerase after the termination of transcription to begin a new round of RNA synthesis.
https://www.khanacademy.org/science/learn-to-clone-a-sheep-and-more/xb1ef3389afa1715a:biotechnology-principles-and-processes/xb1ef3389afa1715a:restriction-digests-cloning-and-transformation/e/restriction-enzyme-mechanism
What site does the initiator tRNA bind to on the ribosome?
A tRNA's anticodon is 5′GGC3′. What amino acid is attached to it?
The peptidyltransferase complex is a component of which of the following?
After the action of the helicase, single-stranded binding proteins keep the parental DNA strands from reforming a double helix.
In bacteria, the sequence that facilitates the binding of the mRNA to the ribosome is called the
The C-terminus of a polypeptide always contains
Long-terminal repeats are unique to which group of transposons?
Where do kinetochores attach to chromosomes?
What is the purpose of phosphorylating the carboxy terminal domain (CTD) of RNA Polymerase II?
Polypeptide growsRibosome and mRNA assemblePolypeptide released
How many total hydrogen bonds would be found holding together the base pairs in a double stranded DNA molecule containing the following nucleotides:
The formation of an open complex usually forms in GC-rich regions of DNA due to the decreased number of hydrogen bonds.
Select the statement that is true regarding tRNA processing in E. coli.
Sigma factor belongs to a general group of proteins called the transcription factors.
Select the feature that is incorrect about this DNA double strand:
The Pribnow box contains a CACAAC consensus sequence located in the −100 region of the promoter.
RNA polymerase I in eukaryotes produces which type of RNA?
A primosome consists of a polymerase and a single-stranded binding protein.

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