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100
What form of DNA carries the sequence required to build a protein?
What is mRNA
100
When does transcription begin in the cell?
What is when RNA polymerase binds to DNA and unwinds it near the beginning of the gene.
100
What enzyme is used to add nucleotides when replicating DNA?
What is RNA polymerase
100
The transcribing enzyme is ____ 1.Ligase 2.DNA polymerase 3.Amino – acyl tranferase (AAT) 4. RNA polymerase
What is RNA polymerase
100
A DNA strand with the sequence AACGTAACG is transcribed. What is the sequence of the mRNA molecule that’s synthesized?
What is UUGCAUUGC
200
_______are Segments of mRNA that aren’t discarded.
What is Exons
200
Where does transcription occur in the cell? (Prokaryotes and Eurkaryotes) (300 pt)
What is Prokaryotes = throughout the cell, Eukaryotes = nucleus
200
Transcription occurs along a ___ template forming an mRNA in the ___ direction. A) 3’to 5’; 5’ to 3’ B) 3' to 5'; 3' to 5' C) 5' to 3'; 3' to 5' D) 5' to 3'; 5' to 3'
What is 3’ to 5’; 5’ to 3’
200
True or False? A spliceosome is an enzyme protein complex that removes exons from the mRNA
What is False. It removes introns from the mRNA
200
The TATA box has _____ a) A high percentage of Adenine and Thymine bases b) A low percentage of Guanine and Cytosine bases c) An equal percentage of Adenine and Guanine bases d) Has a low percentage of Guanine and Adenine bases
What is a high percentage of Adenine and Thymine bases
300
DAILY DOUBLE A geneticist isolates a gene for a specific trait under study. She also isolates the corresponding mRNA. Upon comparison, the mRNA is found to contain 1,000 fewer bases than the DNA sequence. Did the geneticist isolate the wrong DNA? A) Yes, mRNA is made from a DNA template and should be the same length as the gene sequence B) Yes, the mRNA should contain more bases than the DNA sequence because bases flanking the gene are also transcribed C) No, the final mRNA contains only exons, the introns were removed D) No, the mRNA was partially degraded after it was transcribed
What is c) No, the final mRNA contains only exons, the introns were removed
300
Transcription is divided into what three sequential processes?
What is initiation, elongation and termination.
300
What strand is not copied during the process of elongation?
What is the coding strand.
300
What is the poly(A)tail?
What is a chain of adenine nucleotides added to the 3' end of the pre-mRNA molecule to protect it from RNA-digesting enzymes in the cytosol.
300
What is the product of transcription for prokaryotes?
What is mRNA ready to be translated into protein by ribosomes.
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