Question 1

Which of the following are synonymous codons?

Accepted Answer

A) UUC and UUG 
B) UCC and UAC 
C) CGA and AGA 
D) AGG and AGC 
E) AAG and AAC 
A) UUC and UUG 
B) UCC and UAC 
C) CGA and AGA 
D) AGG and AGC 
E) AAG and AAC

Question 2

You have identified a bacterial protein that has retained the starting fMet in its protein sequence.Which of the following is likely true of this protein?

Accepted Answer

A) It is likely nonfunctional,since bacteria use posttranslational cleavage of fMet to make functional proteins. 
B) It will show improper protein sorting and will likely remain in the ER. 
C) It will be not be able to be chemically modified,so it will be sent to the Golgi for secretion. 
D) It will be a functional bacterial protein,since all functional proteins must begin with fMet. 
E) It will likely form a disulfide bond with a second peptide chain,forming a protein complex. 
A) It is likely nonfunctional,since bacteria use posttranslational cleavage of fMet to make functional proteins. 
B) It will show improper protein sorting and will likely remain in the ER. 
C) It will be not be able to be chemically modified,so it will be sent to the Golgi for secretion. 
D) It will be a functional bacterial protein,since all functional proteins must begin with fMet. 
E) It will likely form a disulfide bond with a second peptide chain,forming a protein complex.

Question 3

What are the three phases of translation?

Accepted Answer

initiation

Question 4

Eighteen of the amino acids have two or more synonymous codons.Which two amino acids are the exceptions?

Accepted Answer

The answer of Eighteen of the amino acids have two...

Question 5

In a polyribosome,which end of the mRNA would have the shortest polypeptides?

Accepted Answer

The answer of In a polyribosome,which end of the mRNA...

Question 6

The Shine-Dalgarno sequence

Accepted Answer

A) is a purine-rich consensus sequence found in the 5′ UTR of the mRNA. 
B) is a pyrimidine-rich consensus sequence found in the 3′ UTR of the mRNA. 
C) is a purine-rich consensus sequence found in the 16S rRNA subunit. 
D) is a region of the tRNA molecule involved in formation of charged tRNAs. 
E) is a consensus sequence involved in the termination of translation. 
A) is a purine-rich consensus sequence found in the 5′ UTR of the mRNA. 
B) is a pyrimidine-rich consensus sequence found in the 3′ UTR of the mRNA. 
C) is a purine-rich consensus sequence found in the 16S rRNA subunit. 
D) is a region of the tRNA molecule involved in formation of charged tRNAs. 
E) is a consensus sequence involved in the termination of translation.

Question 7

A mutagen has introduced a frame-shift mutation by adding one nucleotide base.Which of the following would be classified as a reversion mutation for this particular mutant?

Accepted Answer

A) deleting 2 bases 
B) adding 1 base 
C) deleting 1 base or adding 1 base 
D) deleting 1 base or adding 3 bases 
E) deleting 1 base or adding 2 bases 
A) deleting 2 bases 
B) adding 1 base 
C) deleting 1 base or adding 1 base 
D) deleting 1 base or adding 3 bases 
E) deleting 1 base or adding 2 bases

Question 8

Compare and contrast the mechanism of action of two commonly used antibiotics.Include details about which steps of translation are inhibited,and explain how the antibiotic accomplishes this inhibition.

Accepted Answer

Antibiotics target different aspects of

Question 9

In the ER,misfolded proteins are identified and bound by what molecules?

Accepted Answer

The answer of In the ER,misfolded proteins are identified and...

Question 10

A signal sequence at the N-terminus of newly synthesized proteins will direct the protein to the ________ for protein packaging.

Accepted Answer

endoplasmi

Question 11

Polypeptides must be sorted after translation.Does protein sorting occur in both prokaryotes and eukaryotes? Describe the process of protein sorting and explain how the signal sequence is involved.What would you expect to see if the signal sequence has been mutated or deleted?

Accepted Answer

Protein sorting is a process that uses s

Which of the following are synonymous codons?

You have identified a bacterial protein that has retained the starting fMet in its protein sequence.Which of the following is likely true of this protein?

What are the three phases of translation?

Eighteen of the amino acids have two or more synonymous codons.Which two amino acids are the exceptions?

In a polyribosome,which end of the mRNA would have the shortest polypeptides?

The Shine-Dalgarno sequence

A mutagen has introduced a frame-shift mutation by adding one nucleotide base.Which of the following would be classified as a reversion mutation for this particular mutant?

Compare and contrast the mechanism of action of two commonly used antibiotics.Include details about which steps of translation are inhibited,and explain how the antibiotic accomplishes this inhibition.

In the ER,misfolded proteins are identified and bound by what molecules?

A signal sequence at the N-terminus of newly synthesized proteins will direct the protein to the ________ for protein packaging.

Polypeptides must be sorted after translation.Does protein sorting occur in both prokaryotes and eukaryotes? Describe the process of protein sorting and explain how the signal sequence is involved.What would you expect to see if the signal sequence has been mutated or deleted?

The Molecular Basis of Heredity, Variation, and Evolution

Transmission Genetics

Cell Division and Chromosome Heredity

Gene Interaction

Genetic Linkage and Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophage

DNA Structure and Replication

Molecular Biology and Transcription and Rna Processing

The Integration of Genetic Approaches: Understanding Sickle Cell Disease

Chromosome Structure

Gene Mutation, DNA Repair, and Homologous Recombination

Chromosome Aberrations and Transposition

Regulation of Gene Expression in Bacteria and Bacteriophage

Regulation of Gene Expression in Eukaryotes

Forward Genetics and Recombinant DNA Technology

Applications of Recombinant DNA Technology and Reverse Genetics

Genomics: Genetics From a Whole-Genome Perspective

Cytoplasmic Inheritance and the Evolution of Organelle Genomes

Developmental Genetics

Genetic Analysis of Quantitative Traits

Population Genetics and Evolution

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Exam 9: The Molecular Biology of Translation

Which of the following are synonymous codons?

You have identified a bacterial protein that has retained the starting fMet in its protein sequence.Which of the following is likely true of this protein?

What are the three phases of translation?

Eighteen of the amino acids have two or more synonymous codons.Which two amino acids are the exceptions?

In a polyribosome,which end of the mRNA would have the shortest polypeptides?

The Shine-Dalgarno sequence

A mutagen has introduced a frame-shift mutation by adding one nucleotide base.Which of the following would be classified as a reversion mutation for this particular mutant?

Compare and contrast the mechanism of action of two commonly used antibiotics.Include details about which steps of translation are inhibited,and explain how the antibiotic accomplishes this inhibition.

In the ER,misfolded proteins are identified and bound by what molecules?

A signal sequence at the N-terminus of newly synthesized proteins will direct the protein to the ________ for protein packaging.

Polypeptides must be sorted after translation.Does protein sorting occur in both prokaryotes and eukaryotes? Describe the process of protein sorting and explain how the signal sequence is involved.What would you expect to see if the signal sequence has been mutated or deleted?

The Molecular Basis of Heredity, Variation, and Evolution

Transmission Genetics

Cell Division and Chromosome Heredity

Gene Interaction

Genetic Linkage and Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophage

DNA Structure and Replication

Molecular Biology and Transcription and Rna Processing

The Integration of Genetic Approaches: Understanding Sickle Cell Disease

Chromosome Structure

Gene Mutation, DNA Repair, and Homologous Recombination

Chromosome Aberrations and Transposition

Regulation of Gene Expression in Bacteria and Bacteriophage

Regulation of Gene Expression in Eukaryotes

Forward Genetics and Recombinant DNA Technology

Applications of Recombinant DNA Technology and Reverse Genetics

Genomics: Genetics From a Whole-Genome Perspective

Cytoplasmic Inheritance and the Evolution of Organelle Genomes

Developmental Genetics

Genetic Analysis of Quantitative Traits

Population Genetics and Evolution

Filters