BS161 Biology Final Exam With Answers (81 Solved Questions)
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In messenger RNA, the protein-coding sequence is present in:
Question options:
exons.
introns.
exons and the poly(A) sequence.
introns and the poly(A) sequence. - exons.
Which process produces multiple proteins from the same primary transcript in the same
cell?
Question options:
chromatin remodeling
histone modification
alternative splicing
combinatorial control - alternative splicing
Alternative splicing allows for:
Question options:
two or more different proteins to be made from a single processed mRNA.
different polypeptides to be made from a single gene.
multiple genes to be used to code for a single polypeptide chain.
enhanced recognition of an mRNA by a ribosome.
increased stability of a mature mRNA. - different polypeptides to be made from a single
gene.
In messenger RNA, the protein-coding sequence is present in:
Question options:
exons.
introns.
exons and the poly(A) sequence.
introns and the poly(A) sequence. - exons.
Which process produces multiple proteins from the same primary transcript in the same
cell?
Question options:
chromatin remodeling
histone modification
alternative splicing
combinatorial control - alternative splicing
Alternative splicing allows for:
Question options:
two or more different proteins to be made from a single processed mRNA.
different polypeptides to be made from a single gene.
multiple genes to be used to code for a single polypeptide chain.
enhanced recognition of an mRNA by a ribosome.
increased stability of a mature mRNA. - different polypeptides to be made from a single
gene.
RNA splicing provides an opportunity for regulating gene expression because:
Question options:
the same exons may be spliced together in different sequences to produce different
proteins from the same primary transcript.
methylation of the poly(A) tail controls how rapidly the primary transcript can be broken up
and spliced back together again.
the same introns may be spliced together in different sequences to produce different
proteins from the same primary transcript.
methylation of spliceosomes controls how rapidly primary transcripts are processed and
sent to the cytoplasm. - the same exons may be spliced together in different sequences to
produce different proteins from the same primary transcript.
In both prokaryotic and eukaryotic gene expression,
Question options:
Introns are removed from genes before translation
RNA must be transported out of the nucleus for translation
One type of RNA corresponds to only one type of protein
Transcription requires RNA polymerase binding to promoter regions - Transcription
requires RNA polymerase binding to promoter regions
In prokaryotes: (Select all correct answers.)
Question options:
translation of an mRNA cannot begin until transcription is completed.
the primary RNA transcript needs a "cap" at the 5' end for the initiation of translation.
the translation of mRNA can begin even before transcription is completed.
the DNA is packaged into nucleoid. - the translation of mRNA can begin even before
transcription is completed.
the DNA is packaged into nucleoid.
In prokaryotes, the AUG codon that starts translation is:
Question options:
the AUG nearest the 5' cap on the mRNA.
adjacent to the 5' cap on the mRNA.
Question options:
the same exons may be spliced together in different sequences to produce different
proteins from the same primary transcript.
methylation of the poly(A) tail controls how rapidly the primary transcript can be broken up
and spliced back together again.
the same introns may be spliced together in different sequences to produce different
proteins from the same primary transcript.
methylation of spliceosomes controls how rapidly primary transcripts are processed and
sent to the cytoplasm. - the same exons may be spliced together in different sequences to
produce different proteins from the same primary transcript.
In both prokaryotic and eukaryotic gene expression,
Question options:
Introns are removed from genes before translation
RNA must be transported out of the nucleus for translation
One type of RNA corresponds to only one type of protein
Transcription requires RNA polymerase binding to promoter regions - Transcription
requires RNA polymerase binding to promoter regions
In prokaryotes: (Select all correct answers.)
Question options:
translation of an mRNA cannot begin until transcription is completed.
the primary RNA transcript needs a "cap" at the 5' end for the initiation of translation.
the translation of mRNA can begin even before transcription is completed.
the DNA is packaged into nucleoid. - the translation of mRNA can begin even before
transcription is completed.
the DNA is packaged into nucleoid.
In prokaryotes, the AUG codon that starts translation is:
Question options:
the AUG nearest the 5' cap on the mRNA.
adjacent to the 5' cap on the mRNA.
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Document Details
University
Chamberlain College of Nursing
Subject
Biology