1
Quiz_________________?
Pyrimidine -
Answer☑️
One carbon ring
Cytosine, Thymine, Uracil
Quiz_________________?
What is the function of mRNA? -
Answer☑️
Carries genetic info out of nucleus
Transcript translated to protein
Quiz_________________?
What is the function of tRNA? -
Answer☑️
Carries aa to ribosome
Anticodon pairs with codon on mRNA strand
, Quiz_________________?
2
What is the function of rRNA? -
Answer☑️
part of ribosome structure
most abundant RNA
coordinated coupling of tRNA to mRNA codons
Quiz_________________?
Feedback inhibition -
Answer☑️
Product of pathway is noncompetitive inhibitor
Binds to allosteric site to slow down rxn b/c too much product
Quiz_________________?
Endonucleases (Prok) -
Answer☑️
Restriction enzymes
Cleaves phoshpodiester bonds w/i poly-nt chain
Recognition site is palindromic sequence
Types I-V
Quiz_________________?
ORI sites -
Answer☑️
nt sequence where replication is initiated
Quiz_________________?
Topoisomerase I -
Answer☑️
, Induces ss breaks
3
Remove DNA supercoils during TXN and DNA replication; for strand breakage during recombination;
for chr condensation; and to disentangle intertwined DNA during mitosis
Quiz_________________?
topoisomerase II -
Answer☑️
cuts both strands of one DNA double helix, passes another unbroken DNA helix through it, and then
reanneals the cut strands
Quiz_________________?
Gyrase (topoisomerase II) -
Answer☑️
Unwinds supercoiling caused by unwinding at the rep fork by introducing DSBs
Quiz_________________?
Helicase -
Answer☑️
Breaks H-bonds of double helix at the replication fork
Quiz_________________?
single-strand DNA binding proteins (SSBPs) -
Answer☑️
Binds ssDNA and prevents it from re-annealing during TXN, replication, repair, and recombination
Quiz_________________?
Telomeres -
Answer☑️
Repeat sequence (TTAGGG) at the ends of chr, protect chr from degradation
, Quiz_________________?
4
RNA polymerase -
Answer☑️
DNA dependent RNApol
Transcribes DNA template to RNA (3'-->5'; anti-parallel)
Quiz_________________?
Splicesomes -
Answer☑️
Complex of snRNPs
Removes introns from pre-mRNA and splices exons together
Quiz_________________?
Enhancers -
Answer☑️
Short regions of DNA that bind proteins (TXN factors) that enhance TXN of a gene
Quiz_________________?
Reverse transcriptase -
Answer☑️
enzyme that transcribes RNA to cDNA (lacks introns)
RNA --> RNA:DNA --> cDNA (dsDNA)
Quiz_________________?
Open Reading Frame (ORF) -
Answer☑️
sections of DNA that begin with start codons and end with stop codons
DNA: 5' --> 3'
transcription: 3' --> 5' DNA --> RNA (promoter)
Quiz_________________?
Pyrimidine -
Answer☑️
One carbon ring
Cytosine, Thymine, Uracil
Quiz_________________?
What is the function of mRNA? -
Answer☑️
Carries genetic info out of nucleus
Transcript translated to protein
Quiz_________________?
What is the function of tRNA? -
Answer☑️
Carries aa to ribosome
Anticodon pairs with codon on mRNA strand
, Quiz_________________?
2
What is the function of rRNA? -
Answer☑️
part of ribosome structure
most abundant RNA
coordinated coupling of tRNA to mRNA codons
Quiz_________________?
Feedback inhibition -
Answer☑️
Product of pathway is noncompetitive inhibitor
Binds to allosteric site to slow down rxn b/c too much product
Quiz_________________?
Endonucleases (Prok) -
Answer☑️
Restriction enzymes
Cleaves phoshpodiester bonds w/i poly-nt chain
Recognition site is palindromic sequence
Types I-V
Quiz_________________?
ORI sites -
Answer☑️
nt sequence where replication is initiated
Quiz_________________?
Topoisomerase I -
Answer☑️
, Induces ss breaks
3
Remove DNA supercoils during TXN and DNA replication; for strand breakage during recombination;
for chr condensation; and to disentangle intertwined DNA during mitosis
Quiz_________________?
topoisomerase II -
Answer☑️
cuts both strands of one DNA double helix, passes another unbroken DNA helix through it, and then
reanneals the cut strands
Quiz_________________?
Gyrase (topoisomerase II) -
Answer☑️
Unwinds supercoiling caused by unwinding at the rep fork by introducing DSBs
Quiz_________________?
Helicase -
Answer☑️
Breaks H-bonds of double helix at the replication fork
Quiz_________________?
single-strand DNA binding proteins (SSBPs) -
Answer☑️
Binds ssDNA and prevents it from re-annealing during TXN, replication, repair, and recombination
Quiz_________________?
Telomeres -
Answer☑️
Repeat sequence (TTAGGG) at the ends of chr, protect chr from degradation
, Quiz_________________?
4
RNA polymerase -
Answer☑️
DNA dependent RNApol
Transcribes DNA template to RNA (3'-->5'; anti-parallel)
Quiz_________________?
Splicesomes -
Answer☑️
Complex of snRNPs
Removes introns from pre-mRNA and splices exons together
Quiz_________________?
Enhancers -
Answer☑️
Short regions of DNA that bind proteins (TXN factors) that enhance TXN of a gene
Quiz_________________?
Reverse transcriptase -
Answer☑️
enzyme that transcribes RNA to cDNA (lacks introns)
RNA --> RNA:DNA --> cDNA (dsDNA)
Quiz_________________?
Open Reading Frame (ORF) -
Answer☑️
sections of DNA that begin with start codons and end with stop codons
DNA: 5' --> 3'
transcription: 3' --> 5' DNA --> RNA (promoter)
