ASCP Molecular Biology Certification Exam
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Terms in this set (1434)
Pyrimidine One carbon ring
Cytosine, Thymine, Uracil
What is the function of mRNA? Carries genetic info out of nucleus
Transcript translated to protein
What is the function of tRNA? Carries aa to ribosome
Anticodon pairs with codon on mRNA strand
What is the function of rRNA? part of ribosome structure
most abundant RNA
coordinated coupling of tRNA to mRNA codons
Feedback inhibition Product of pathway is noncompetitive inhibitor
Binds to allosteric site to slow down rxn b/c too
much product
, Endonucleases (Prok) Restriction enzymes
Cleaves phoshpodiester bonds w/i poly-nt chain
Recognition site is palindromic sequence
Types I-V
ORI sites nt sequence where replication is initiated
Topoisomerase I Induces ss breaks
Remove DNA supercoils during TXN and DNA
replication; for strand breakage during
recombination; for chr condensation; and to
disentangle intertwined DNA during mitosis
topoisomerase II cuts both strands of one DNA double helix, passes
another unbroken DNA helix through it, and then
reanneals the cut strands
Gyrase (topoisomerase II) Unwinds supercoiling caused by unwinding at the
rep fork by introducing DSBs
Helicase Breaks H-bonds of double helix at the replication
fork
single-strand DNA binding proteins Binds ssDNA and prevents it from re-annealing
(SSBPs) during TXN, replication, repair, and recombination
Telomeres Repeat sequence (TTAGGG) at the ends of chr,
protect chr from degradation
RNA polymerase DNA dependent RNApol
Transcribes DNA template to RNA (3'-->5'; anti-
parallel)
Questions & Answers | Latest Already Graded A+
UPDATE 2026!! STUDY GUIDE EXAM
Save
Terms in this set (1434)
Pyrimidine One carbon ring
Cytosine, Thymine, Uracil
What is the function of mRNA? Carries genetic info out of nucleus
Transcript translated to protein
What is the function of tRNA? Carries aa to ribosome
Anticodon pairs with codon on mRNA strand
What is the function of rRNA? part of ribosome structure
most abundant RNA
coordinated coupling of tRNA to mRNA codons
Feedback inhibition Product of pathway is noncompetitive inhibitor
Binds to allosteric site to slow down rxn b/c too
much product
, Endonucleases (Prok) Restriction enzymes
Cleaves phoshpodiester bonds w/i poly-nt chain
Recognition site is palindromic sequence
Types I-V
ORI sites nt sequence where replication is initiated
Topoisomerase I Induces ss breaks
Remove DNA supercoils during TXN and DNA
replication; for strand breakage during
recombination; for chr condensation; and to
disentangle intertwined DNA during mitosis
topoisomerase II cuts both strands of one DNA double helix, passes
another unbroken DNA helix through it, and then
reanneals the cut strands
Gyrase (topoisomerase II) Unwinds supercoiling caused by unwinding at the
rep fork by introducing DSBs
Helicase Breaks H-bonds of double helix at the replication
fork
single-strand DNA binding proteins Binds ssDNA and prevents it from re-annealing
(SSBPs) during TXN, replication, repair, and recombination
Telomeres Repeat sequence (TTAGGG) at the ends of chr,
protect chr from degradation
RNA polymerase DNA dependent RNApol
Transcribes DNA template to RNA (3'-->5'; anti-
parallel)
