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9 Jan 2018

In the process of transcription, the enzyme __________________________ unwinds the DNA sequence to be transcribed and then synthesizes a chain of RNA nucleotides that is complementary to it. A. DNA synthase B. RNA synthase C. Protease D. DNA Polymerase E. RNA Polymeras

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Related questions

9. The nucleotide on the DNA template that marks the starting point for RNA synthesis is called

a. 0 (zero point)

b. +1

c. -1

d. Start codon

e. TATA

10. Which bacterial RNA polymerase synthesizes tRNA?

a. RNA polymerase I

b. RNA polymerase II

c. RNA polymerase III

d. Core enzyme

e. Promoter

11. What general transcription factor has enzymatic activity?

a. Operator

b. TFIIH

c. eIF2

d. RNAP II

e. CTD

12. What enzyme activity/activities is/are known to be associated with the transcription factor in the previous question?

a. protein kinase and a DNA helicase

b. protein phosphatase

c. ribozyme

d. synthesis of RNA

e. a and c

Select the statement(s) that apply to both DNA replication and RNA transcription. Select the statement(s) that apply to both DNA replication and RNA transcription.

A. Separation of the DNA strands ("unzipping")

B. A requirement for a primer C. Directionality of synthesis

D. Base-pairing of complementary nucleotides

E. Energy to drive the process is provided by triphosphate nucleotides

During transcription in eukaryotes, a type of RNA polymerase called RNA polymerase II moves along the template strand of the DNA in the 3'→5' direction. However, for any given gene, either strand of the double-stranded DNA may function as the template strand. Which of the following initially determines which DNA strand is the template strand, and therefore in which direction RNA polymerase II moves along the DNA?

A. the location of specific proteins (transcription factors) that bind to the DNA

B. the specific sequence of bases along the DNA strands

C. the location along the chromosome where the double-stranded DNA unwinds

D. the position of the gene’s promoter on the chromosome

E. which of the two strands of DNA carries the RNA primer

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