EBIO 2070 exam 2
with 100% correct
answers 2024
Which do you think is the level at which gene expression is most
frequently regulated in eukaryotes?
A) transcription
B)Co-transcriptional processing
C)translation
D) other
A) Transcription?
technically they occur at all levels but this is the most common(if you see
this on the exam it would be all of them)
Why do eukaryotes have nucleosomes, splicing or introns,5' caps, poly(A)
tails, and microRNAs?
A) they allow a more complex regulation of gene expression
B) they represent very little cost to the organism and therefore are
difficult to eliminate by natural selection
C) they represent a defense against parasitic nucleic acids (viruses and
transposable elements)
C) they represent a defense against parasitic nucleic acids (viruses and
transposable elements)
Two replication forms form at a single origin of replication. Replication of
the top strand in the above figure would be
A) continuous at A and continuous at A*
B) continuous at A and discontinuous at A*
C) discontinuous at A and contnuous at A*
B) continuous at A and discontinuous at A*
How do eukaryotes solve the above problem of a 3' overhang following
primer removal?
A) they extend the yellow strand with a 3'-5' polymerase
B) they extend the blue strand without using a template and then form a
new okazaki fragments
, C) they extend the blue strand using a template other than the yellow
strand and then form a new Okazaki fragment
D) they just ignore the problem and hope no one notices
C) they extend the blue strand using a template other than the yellow
strand and then form a new Okazaki fragment
How many potential reading frames are there in a double-stranded DNA
molecule?
A) 1
B) 2
C) 3
D) 4
E) 6
E) 6
A sequence in the non-template strand of a gene is 5'-TTG-3'. What is the
anticodon sequence of a tRNAthat binds to the correspodning sequence of
the mRNA?
A) 5'-UUG-3'
B)5'-GUU-3'
C)5'-CAA-3'
D)5'-AAC-3'
C)5'-CAA-3'
which of the following DNA elements or proteins would you expect to find
in only a subset of the cells in a organism
A) a particular enhancer
B) a particular transcriptional activator protein protein
C) a particular general transcriptional factor protein
D) A and B
E) a particular promoter
B) a particular transcriptional activator protein protein
which of the following processes occurs in the nucleus rather than the
cytoplasm?
A) capping
B) polyadenylation
C) RNA splicing
D)A and C
E) a, b, and c
E) a, b, and c
with 100% correct
answers 2024
Which do you think is the level at which gene expression is most
frequently regulated in eukaryotes?
A) transcription
B)Co-transcriptional processing
C)translation
D) other
A) Transcription?
technically they occur at all levels but this is the most common(if you see
this on the exam it would be all of them)
Why do eukaryotes have nucleosomes, splicing or introns,5' caps, poly(A)
tails, and microRNAs?
A) they allow a more complex regulation of gene expression
B) they represent very little cost to the organism and therefore are
difficult to eliminate by natural selection
C) they represent a defense against parasitic nucleic acids (viruses and
transposable elements)
C) they represent a defense against parasitic nucleic acids (viruses and
transposable elements)
Two replication forms form at a single origin of replication. Replication of
the top strand in the above figure would be
A) continuous at A and continuous at A*
B) continuous at A and discontinuous at A*
C) discontinuous at A and contnuous at A*
B) continuous at A and discontinuous at A*
How do eukaryotes solve the above problem of a 3' overhang following
primer removal?
A) they extend the yellow strand with a 3'-5' polymerase
B) they extend the blue strand without using a template and then form a
new okazaki fragments
, C) they extend the blue strand using a template other than the yellow
strand and then form a new Okazaki fragment
D) they just ignore the problem and hope no one notices
C) they extend the blue strand using a template other than the yellow
strand and then form a new Okazaki fragment
How many potential reading frames are there in a double-stranded DNA
molecule?
A) 1
B) 2
C) 3
D) 4
E) 6
E) 6
A sequence in the non-template strand of a gene is 5'-TTG-3'. What is the
anticodon sequence of a tRNAthat binds to the correspodning sequence of
the mRNA?
A) 5'-UUG-3'
B)5'-GUU-3'
C)5'-CAA-3'
D)5'-AAC-3'
C)5'-CAA-3'
which of the following DNA elements or proteins would you expect to find
in only a subset of the cells in a organism
A) a particular enhancer
B) a particular transcriptional activator protein protein
C) a particular general transcriptional factor protein
D) A and B
E) a particular promoter
B) a particular transcriptional activator protein protein
which of the following processes occurs in the nucleus rather than the
cytoplasm?
A) capping
B) polyadenylation
C) RNA splicing
D)A and C
E) a, b, and c
E) a, b, and c
