1|Page
BCHM 4360 EXAM 3 NEWEST 2025 ACTUAL EXAM
COMPLETE 180 QUESTIONS AND 100% CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
AN GRADED A+|BRAND NEW!!
This group of introns can also act as mobile genetic
elements by reverse splicing, and they often have open
reading frames within the introns that assist splicing -
ANSWER-Group II introns
_________________ genes often have several introns
which can be very long (thousands of bases) and account
for up to 90% of a pre-mRNA - ANSWER-Eukaryotic
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The human _________________ gene has 78 introns and
exons are sometimes many thousands of bases apart -
ANSWER-Dystrophin
Some eukaryotes, like ______________, have fewer,
shorter introns - ANSWER-Yeast
Most eukaryotic introns are not - ANSWER-Self-splicing
Most eukaryotic introns are not self splicing, so splicing is
mediated by the - ANSWER-Spliceosome
Spliceosome is made up of several small - ANSWER-
Small nuclear ribonucleoproteins (snRNP)
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Spliceosome catalyzed splicing is similar to that of this
group of introns - ANSWER-Group II introns
Spliceosomes recognize ________________ in pre-
mRNA - ANSWER-Splice sites
Splice sites are defined by
5' and 3' splice sites
Branch point nucleotide within the intron
Polypyrimidine region before the 3' splice site - ANSWER-
Short sequence motifs
, 4|Page
Usually, introns have ________ and ________ at their
ends - ANSWER-GU and AG
The spliceosome has _________ snRNPs, which are -
ANSWER-5, U1, U2, U4, U5, U6
The spliceosome has 5 snRNPs (U1, U2, U4, U5, U6).
Each has an ____________ of about 100-300 nucleotides,
plus proteins - ANSWER-snRNA
The snRNAs of the snRNPS of the spliceosome form base
pairs with the pre-mRNA and work as the
_________________ part of the snRNP - ANSWER-
Recognition
BCHM 4360 EXAM 3 NEWEST 2025 ACTUAL EXAM
COMPLETE 180 QUESTIONS AND 100% CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
AN GRADED A+|BRAND NEW!!
This group of introns can also act as mobile genetic
elements by reverse splicing, and they often have open
reading frames within the introns that assist splicing -
ANSWER-Group II introns
_________________ genes often have several introns
which can be very long (thousands of bases) and account
for up to 90% of a pre-mRNA - ANSWER-Eukaryotic
,2|Page
The human _________________ gene has 78 introns and
exons are sometimes many thousands of bases apart -
ANSWER-Dystrophin
Some eukaryotes, like ______________, have fewer,
shorter introns - ANSWER-Yeast
Most eukaryotic introns are not - ANSWER-Self-splicing
Most eukaryotic introns are not self splicing, so splicing is
mediated by the - ANSWER-Spliceosome
Spliceosome is made up of several small - ANSWER-
Small nuclear ribonucleoproteins (snRNP)
,3|Page
Spliceosome catalyzed splicing is similar to that of this
group of introns - ANSWER-Group II introns
Spliceosomes recognize ________________ in pre-
mRNA - ANSWER-Splice sites
Splice sites are defined by
5' and 3' splice sites
Branch point nucleotide within the intron
Polypyrimidine region before the 3' splice site - ANSWER-
Short sequence motifs
, 4|Page
Usually, introns have ________ and ________ at their
ends - ANSWER-GU and AG
The spliceosome has _________ snRNPs, which are -
ANSWER-5, U1, U2, U4, U5, U6
The spliceosome has 5 snRNPs (U1, U2, U4, U5, U6).
Each has an ____________ of about 100-300 nucleotides,
plus proteins - ANSWER-snRNA
The snRNAs of the snRNPS of the spliceosome form base
pairs with the pre-mRNA and work as the
_________________ part of the snRNP - ANSWER-
Recognition
