Bio 212 Exam #2 ISU (Manz & Dobbs)
Questions And Answers 100% Correct
Which of the following mutations would be most likely to have a harmful effect on an organism?
-a single nucleotide insertion downstream of, and close to, the start of the coding sequence
-a single nucleotide deletion near the end of the coding sequence
-a deletion of three nucleotides near the middle of a gene
-a single nucleotide deletion in the middle of an intron Correct Answ_a single nucleotide
insertion downstream of, and close to, the start of the coding sequence
Which of the following methods is NOT used by eukaryotes to regulate gene expression?
-Alternative splicing
-Enhancers and silencers
-specialized sigma proteins
-RNA interference Correct Answ_specialized sigma proteins
In the termination phase of translation:
, Bio 212 Exam #2 ISU (Manz & Dobbs)
Questions And Answers 100% Correct
-the mRNA stop codon is encountered at the E site
-the terminator tRNA anticodon binds with the mRNA stop
codon
-the protein release factor fills the A site
-methionine is always the last amino acid to be added Correct Answ_the protein release
factor fills the A site
What will be the RNA sequence that is transcribed from the DNA sequence below?
5' - ACTCGCATCGGCA - 3' (TEMPLATE STRAND)
3' - TGAGCGTAGCCGT - 5' (CODING STRAND)
-3' | TGAGCGTAGCCGT | 5'
-5' | UGCCGAUGCGAGU | 3'
-3' | UGCCGAUGCGAGU | 5'
-5' | TGAGCGTAGCCGT | 3' Correct Answ_5' | UGCCGAUGCGAGU | 3'
, Bio 212 Exam #2 ISU (Manz & Dobbs)
Questions And Answers 100% Correct
A drug decreases the rate of RNA degradation in a cell. What type of gene regulation would this
be and what would be the effect of the drug?
-Transcriptional control, decreased protein production
-Translational control, increased protein production
-Translational control, decreased protein production
-Post-translational control, increased protein production Correct Answ_Translational
control, increased protein production
The purpose of the Hershey-Chase experiment was to determine whether genes are made of
proteins or DNA. In the experiment, the researchers grew a virus in either the presence of
radioactive sulfur (35S) or radioactive phosphorus (32P). They then allowed the virus to infect a
host cell (E. coli). Which of the following was NOT an observation of the Hershey-Chase
experiment?
-32P labeled and tracked viral DNA, but not viral protein -35S labeled and tracked viral protein,
but not viral DNA
-35S labeled and tracked the E. coli
Questions And Answers 100% Correct
Which of the following mutations would be most likely to have a harmful effect on an organism?
-a single nucleotide insertion downstream of, and close to, the start of the coding sequence
-a single nucleotide deletion near the end of the coding sequence
-a deletion of three nucleotides near the middle of a gene
-a single nucleotide deletion in the middle of an intron Correct Answ_a single nucleotide
insertion downstream of, and close to, the start of the coding sequence
Which of the following methods is NOT used by eukaryotes to regulate gene expression?
-Alternative splicing
-Enhancers and silencers
-specialized sigma proteins
-RNA interference Correct Answ_specialized sigma proteins
In the termination phase of translation:
, Bio 212 Exam #2 ISU (Manz & Dobbs)
Questions And Answers 100% Correct
-the mRNA stop codon is encountered at the E site
-the terminator tRNA anticodon binds with the mRNA stop
codon
-the protein release factor fills the A site
-methionine is always the last amino acid to be added Correct Answ_the protein release
factor fills the A site
What will be the RNA sequence that is transcribed from the DNA sequence below?
5' - ACTCGCATCGGCA - 3' (TEMPLATE STRAND)
3' - TGAGCGTAGCCGT - 5' (CODING STRAND)
-3' | TGAGCGTAGCCGT | 5'
-5' | UGCCGAUGCGAGU | 3'
-3' | UGCCGAUGCGAGU | 5'
-5' | TGAGCGTAGCCGT | 3' Correct Answ_5' | UGCCGAUGCGAGU | 3'
, Bio 212 Exam #2 ISU (Manz & Dobbs)
Questions And Answers 100% Correct
A drug decreases the rate of RNA degradation in a cell. What type of gene regulation would this
be and what would be the effect of the drug?
-Transcriptional control, decreased protein production
-Translational control, increased protein production
-Translational control, decreased protein production
-Post-translational control, increased protein production Correct Answ_Translational
control, increased protein production
The purpose of the Hershey-Chase experiment was to determine whether genes are made of
proteins or DNA. In the experiment, the researchers grew a virus in either the presence of
radioactive sulfur (35S) or radioactive phosphorus (32P). They then allowed the virus to infect a
host cell (E. coli). Which of the following was NOT an observation of the Hershey-Chase
experiment?
-32P labeled and tracked viral DNA, but not viral protein -35S labeled and tracked viral protein,
but not viral DNA
-35S labeled and tracked the E. coli
