BSCI330 Exam 2 Frauwirth Questions
With Correct Answers
Which way is RNA transcribed? - CORRECT ANSWER✔✔-5' to 3'
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where does transcription initiate? - CORRECT ANSWER✔✔-promoter
| | | | | |
what do eukaryotes require for the start of transcription? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-general transcription factors | |
What do elongation factors do in transcription? - CORRECT
| | | | | | | | |
ANSWER✔✔-use ATP hydrolysis to help RNA polymerase move along
| | | | | | | | |
chromatin to extend the RNA chain
| | | | |
how do prokaryotes stop transcription? - CORRECT ANSWER✔✔-
| | | | | | |
terminator sequence |
how do eukaryotes stop transcription? - CORRECT ANSWER✔✔-
| | | | | | |
polyadenylation signal |
,What is the polyadenylation signal? - CORRECT ANSWER✔✔-AAUAAA,
| | | | | | | |
signals that RNA transcript should be released 10-35 nucleotides past
| | | | | | | | | |
the sequence
|
what is the first RNA modification? - CORRECT ANSWER✔✔-addition of
| | | | | | | | | |
7-methylguanosine "cap" to 5' end of RNA --> marks RNA as mRNA to be | | | | | | | | | | | | |
what carries out RNA splicing? - CORRECT ANSWER✔✔-spliceosomes
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what are spliceosomes made up of? - CORRECT ANSWER✔✔--small
| | | | | | | | |
nuclear ribonucleoproteins (snRNPs)
| |
-small nuclear RNAs (snRNAs)
| | |
-multiple other proteins | |
What does RNA splicing do? - CORRECT ANSWER✔✔-removes introns
| | | | | | | | |
and joins exons
| |
what is the poly-a-tail? - CORRECT ANSWER✔✔-a sequence of 50-250
| | | | | | | | | |
adenine nucleotides added onto the 3' end of a pre-mRNA molecule
| | | | | | | | | |
what is the nuclear export receptor? - CORRECT ANSWER✔✔-guides
| | | | | | | | |
mature mRNA through nuclear pore complex into cytosol
| | | | | | |
, what is rRNA? - CORRECT ANSWER✔✔-rRNA is ribosomal RNA it helps
| | | | | | | | | | |
put amino acids together in chains.
| | | | |
what synthesizes rRNA? - CORRECT ANSWER✔✔-RNA polymerase I and
| | | | | | | | |
III
what is a codon? - CORRECT ANSWER✔✔-a sequence of three
| | | | | | | | | |
nucleotides that together form a unit of genetic code in a DNA or RNA
| | | | | | | | | | | | | |
molecule.
what is tRNA? - CORRECT ANSWER✔✔-transfer RNA, transfers amino
| | | | | | | | |
acids to ribosomes
| |
What is the anticodon? - CORRECT ANSWER✔✔-group of three bases
| | | | | | | | | |
on a tRNA molecule that are complementary to an mRNA codon
| | | | | | | | | |
What is aminoacyl-tRNA synthetase? - CORRECT ANSWER✔✔-It puts
| | | | | | | |
the correct amino acid on the correct tRNA
| | | | | | |
how are amino acids "activated" in translation? - CORRECT
| | | | | | | | |
ANSWER✔✔--conjugates to AMP | |
-energetically expensive |
With Correct Answers
Which way is RNA transcribed? - CORRECT ANSWER✔✔-5' to 3'
| | | | | | | | |
where does transcription initiate? - CORRECT ANSWER✔✔-promoter
| | | | | |
what do eukaryotes require for the start of transcription? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-general transcription factors | |
What do elongation factors do in transcription? - CORRECT
| | | | | | | | |
ANSWER✔✔-use ATP hydrolysis to help RNA polymerase move along
| | | | | | | | |
chromatin to extend the RNA chain
| | | | |
how do prokaryotes stop transcription? - CORRECT ANSWER✔✔-
| | | | | | |
terminator sequence |
how do eukaryotes stop transcription? - CORRECT ANSWER✔✔-
| | | | | | |
polyadenylation signal |
,What is the polyadenylation signal? - CORRECT ANSWER✔✔-AAUAAA,
| | | | | | | |
signals that RNA transcript should be released 10-35 nucleotides past
| | | | | | | | | |
the sequence
|
what is the first RNA modification? - CORRECT ANSWER✔✔-addition of
| | | | | | | | | |
7-methylguanosine "cap" to 5' end of RNA --> marks RNA as mRNA to be | | | | | | | | | | | | |
what carries out RNA splicing? - CORRECT ANSWER✔✔-spliceosomes
| | | | | | |
what are spliceosomes made up of? - CORRECT ANSWER✔✔--small
| | | | | | | | |
nuclear ribonucleoproteins (snRNPs)
| |
-small nuclear RNAs (snRNAs)
| | |
-multiple other proteins | |
What does RNA splicing do? - CORRECT ANSWER✔✔-removes introns
| | | | | | | | |
and joins exons
| |
what is the poly-a-tail? - CORRECT ANSWER✔✔-a sequence of 50-250
| | | | | | | | | |
adenine nucleotides added onto the 3' end of a pre-mRNA molecule
| | | | | | | | | |
what is the nuclear export receptor? - CORRECT ANSWER✔✔-guides
| | | | | | | | |
mature mRNA through nuclear pore complex into cytosol
| | | | | | |
, what is rRNA? - CORRECT ANSWER✔✔-rRNA is ribosomal RNA it helps
| | | | | | | | | | |
put amino acids together in chains.
| | | | |
what synthesizes rRNA? - CORRECT ANSWER✔✔-RNA polymerase I and
| | | | | | | | |
III
what is a codon? - CORRECT ANSWER✔✔-a sequence of three
| | | | | | | | | |
nucleotides that together form a unit of genetic code in a DNA or RNA
| | | | | | | | | | | | | |
molecule.
what is tRNA? - CORRECT ANSWER✔✔-transfer RNA, transfers amino
| | | | | | | | |
acids to ribosomes
| |
What is the anticodon? - CORRECT ANSWER✔✔-group of three bases
| | | | | | | | | |
on a tRNA molecule that are complementary to an mRNA codon
| | | | | | | | | |
What is aminoacyl-tRNA synthetase? - CORRECT ANSWER✔✔-It puts
| | | | | | | |
the correct amino acid on the correct tRNA
| | | | | | |
how are amino acids "activated" in translation? - CORRECT
| | | | | | | | |
ANSWER✔✔--conjugates to AMP | |
-energetically expensive |
