BIO 1330 Exam 4 2025/2026 Exam
Questions and Answers | 100% Solved
Which of the following steps for terminating translation are correct and in
the right order? - 🧠ANSWER ✔✔1. Release factor binds to stop codon
2. Polypeptide and uncharged tRNAs are released
3. Ribosome subunits separate
Which of the following best describes the significance of the TATA box in
eukaryotic promoters? - 🧠ANSWER ✔✔It is the binding site for a
transcription factor.
The release factor (RF) __________. - 🧠ANSWER ✔✔binds to the stop
codon in the A site in place of a tRNA
Which of the following statements best describes the ribosome binding
site? - 🧠ANSWER ✔✔The ribosome binding site is where the small
ribosome subunit binds; it is located upstream of the start codon.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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1
,In transcription, ___________ produces an RNA molecule with a base
sequence complementary to the base sequence of the _____________. -
🧠ANSWER ✔✔RNA polymerase; DNA template strand
Modifications needed for converting a primary transcript into a mature RNA
are called ________. - 🧠ANSWER ✔✔RNA processing
An advantage of introns is that they __________. - 🧠ANSWER ✔✔allow
expression of different exon combinations from one gene
RNA polymerase reads the template strand. The non-template strand is
________. - 🧠ANSWER ✔✔the coding strand—its sequence matches the
sequence of the RNA that is transcribed from the template strand
A gene is a __________. - 🧠ANSWER ✔✔coding and regulatory sequence
that directs the production of one or more related polypeptides or RNAs
What prevents the DNA coding strand and RNA from matching exactly in
base sequence? - 🧠ANSWER ✔✔RNA has the base uracil (U) rather than
the thymine (T) found in the coding strand. Adenine (A) in the DNA
template strand specifies a U in the complementary RNA strand.
A primary transcript in the nucleus of a eukaryotic cell is __________ the
functional mRNA, whereas a primary transcript in a bacterial cell is
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STATEMENT. ALL RIGHTS RESERVED
2
,__________ the functional mRNA. - 🧠ANSWER ✔✔larger than; the same
size as
During RNA splicing, which molecular component of the spliceosome
catalyzes the excision reaction? - 🧠ANSWER ✔✔snRNA
Where does an amino acid attach to a tRNA? - 🧠ANSWER ✔✔At the 3′ end
Researchers report that a protein is encoded by a gene with four promoters
that give rise to at least eight different mRNAs. What mechanism could
account for the production of these different mRNAs from the same gene? -
🧠ANSWER ✔✔Alternative splicing
Which of the following best describes the processing of eukaryotic pre-
mRNAs in the proper order? - 🧠ANSWER ✔✔The addition of a 5′ cap;
removal of introns; Poly (A) tail
How does RNA polymerase begin transcription in eukaryotes? - 🧠ANSWER
✔✔By binding to promoter sequences in DNA
Ribosomes translate mRNAs into proteins with the help of ____________. -
🧠ANSWER ✔✔adaptor molecules called tRNAs
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, The ____________ of the eukaryotic promoter is analogous to the
__________ of the bacterial promoter. - 🧠ANSWER ✔✔TATA box; -1 box
In addition to RNA polymerase, transcription in eukaryotes requires which
of the following? - 🧠ANSWER ✔✔Several transcription factors
Which option lists the steps of transcription initiation in the proper order? -
🧠ANSWER ✔✔Chromatin remodeling, exposure of promoter and regulatory
sequences, assembly of proteins, proteins contact core promoter
Which of the following statements best describes a eukaryotic promoter? -
🧠ANSWER ✔✔It is found upstream of the gene and contains the TATA
box.
Which of the following is involved in the first step of initiating transcription? -
🧠ANSWER ✔✔TATA-binding protein (TBP)
Which of the following will speed up the rate of transcription? - 🧠ANSWER
✔✔Activators
Proteins that stop or slow the cell cycle when conditions are unfavorable for
cell division are called ________. - 🧠ANSWER ✔✔tumor suppressors
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
4
Questions and Answers | 100% Solved
Which of the following steps for terminating translation are correct and in
the right order? - 🧠ANSWER ✔✔1. Release factor binds to stop codon
2. Polypeptide and uncharged tRNAs are released
3. Ribosome subunits separate
Which of the following best describes the significance of the TATA box in
eukaryotic promoters? - 🧠ANSWER ✔✔It is the binding site for a
transcription factor.
The release factor (RF) __________. - 🧠ANSWER ✔✔binds to the stop
codon in the A site in place of a tRNA
Which of the following statements best describes the ribosome binding
site? - 🧠ANSWER ✔✔The ribosome binding site is where the small
ribosome subunit binds; it is located upstream of the start codon.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,In transcription, ___________ produces an RNA molecule with a base
sequence complementary to the base sequence of the _____________. -
🧠ANSWER ✔✔RNA polymerase; DNA template strand
Modifications needed for converting a primary transcript into a mature RNA
are called ________. - 🧠ANSWER ✔✔RNA processing
An advantage of introns is that they __________. - 🧠ANSWER ✔✔allow
expression of different exon combinations from one gene
RNA polymerase reads the template strand. The non-template strand is
________. - 🧠ANSWER ✔✔the coding strand—its sequence matches the
sequence of the RNA that is transcribed from the template strand
A gene is a __________. - 🧠ANSWER ✔✔coding and regulatory sequence
that directs the production of one or more related polypeptides or RNAs
What prevents the DNA coding strand and RNA from matching exactly in
base sequence? - 🧠ANSWER ✔✔RNA has the base uracil (U) rather than
the thymine (T) found in the coding strand. Adenine (A) in the DNA
template strand specifies a U in the complementary RNA strand.
A primary transcript in the nucleus of a eukaryotic cell is __________ the
functional mRNA, whereas a primary transcript in a bacterial cell is
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
,__________ the functional mRNA. - 🧠ANSWER ✔✔larger than; the same
size as
During RNA splicing, which molecular component of the spliceosome
catalyzes the excision reaction? - 🧠ANSWER ✔✔snRNA
Where does an amino acid attach to a tRNA? - 🧠ANSWER ✔✔At the 3′ end
Researchers report that a protein is encoded by a gene with four promoters
that give rise to at least eight different mRNAs. What mechanism could
account for the production of these different mRNAs from the same gene? -
🧠ANSWER ✔✔Alternative splicing
Which of the following best describes the processing of eukaryotic pre-
mRNAs in the proper order? - 🧠ANSWER ✔✔The addition of a 5′ cap;
removal of introns; Poly (A) tail
How does RNA polymerase begin transcription in eukaryotes? - 🧠ANSWER
✔✔By binding to promoter sequences in DNA
Ribosomes translate mRNAs into proteins with the help of ____________. -
🧠ANSWER ✔✔adaptor molecules called tRNAs
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, The ____________ of the eukaryotic promoter is analogous to the
__________ of the bacterial promoter. - 🧠ANSWER ✔✔TATA box; -1 box
In addition to RNA polymerase, transcription in eukaryotes requires which
of the following? - 🧠ANSWER ✔✔Several transcription factors
Which option lists the steps of transcription initiation in the proper order? -
🧠ANSWER ✔✔Chromatin remodeling, exposure of promoter and regulatory
sequences, assembly of proteins, proteins contact core promoter
Which of the following statements best describes a eukaryotic promoter? -
🧠ANSWER ✔✔It is found upstream of the gene and contains the TATA
box.
Which of the following is involved in the first step of initiating transcription? -
🧠ANSWER ✔✔TATA-binding protein (TBP)
Which of the following will speed up the rate of transcription? - 🧠ANSWER
✔✔Activators
Proteins that stop or slow the cell cycle when conditions are unfavorable for
cell division are called ________. - 🧠ANSWER ✔✔tumor suppressors
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
4
