Question 1

Amber mutations are mutations that create termination codons in the middle of an mRNA causing premature translation termination.

Accepted Answer

A) True 
 B)False

Question 2

Place the steps of translation elongation in the correct order.(1)Peptidyl transferase forms a peptide bond between the peptide in the P site and the newly arrived aminoacyl-tRNA in the A site.(2)EF-G,with GTP,translocates peptidyl-tRNA to the P site.(3)EF-Tu,with GTP,binds an aminoacyl-tRNA to the ribosomal A site.

Accepted Answer

A) 3,1,2 
B) 3,2,1 
C) 1,2,3 
D) 1,3,2 
E) 2,3,1 
A) 3,1,2 
B) 3,2,1 
C) 1,2,3 
D) 1,3,2 
E) 2,3,1

Question 3

tmRNA is involved in rescuing the ribosome from non-stop translation.

Accepted Answer

A) True 
 B)False

Question 4

tmRNA resembles tRNA except for the fact that it lacks a(n)_________ and a _____ loop.

Accepted Answer

The answer of tmRNA resembles tRNA except for the fact...

Question 5

EF-Tu is an important protein in cells whose function is to

Accepted Answer

A) properly fold proteins. 
B) ensure proper ribosome assembly. 
C) escort aminoacyl-tRNA to the ribosome. 
D) protect rRNA from degradation by RNases. 
E) stabilize mRNA within the ribosome. 
A) properly fold proteins. 
B) ensure proper ribosome assembly. 
C) escort aminoacyl-tRNA to the ribosome. 
D) protect rRNA from degradation by RNases. 
E) stabilize mRNA within the ribosome.

Question 6

Which of the following characteristics is not a characteristic of a G protein?

Accepted Answer

A) They bind GMP for activation. 
B) They have intrinsic GTPase activity. 
C) Binding of GTP activates their function. 
D) Cleavage of bound GTP to GDP inactivates them. 
E) They cycle between three conformational states. 
A) They bind GMP for activation. 
B) They have intrinsic GTPase activity. 
C) Binding of GTP activates their function. 
D) Cleavage of bound GTP to GDP inactivates them. 
E) They cycle between three conformational states.

Question 7

Both prokaryotes and eukaryotes rely on tmRNA to deal with aberrant termination.

Accepted Answer

A) True 
 B)False

Question 8

The E site of the ribosome plays a critical role in the entrance of tRNA into the ribosome.

Accepted Answer

A) True 
 B)False

Question 9

Proteins are synthesized in the __________ to ____________ direction by the ribosome.

Accepted Answer

The answer of Proteins are synthesized in the __________ to...

Question 10

Ribosome recycling factor (RRF)is another RNA molecule that resembles tRNA.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following statements is not true concerning the genetic code?

Accepted Answer

A) It is an overlapping code. 
B) It is a "comma-less" code. 
C) It is an almost universal code. 
D) It is capable of wobble base pairing. 
E) It is a triplet code. 
A) It is an overlapping code. 
B) It is a "comma-less" code. 
C) It is an almost universal code. 
D) It is capable of wobble base pairing. 
E) It is a triplet code.

Question 12

Peptidyl transferase activity can be inhibited in prokaryotic cells by penicillin.

Accepted Answer

A) True 
 B)False

Amber mutations are mutations that create termination codons in the middle of an mRNA causing premature translation termination.

tmRNA is involved in rescuing the ribosome from non-stop translation.

tmRNA resembles tRNA except for the fact that it lacks a(n)_____ and a _ loop.

EF-Tu is an important protein in cells whose function is to

Which of the following characteristics is not a characteristic of a G protein?

Both prokaryotes and eukaryotes rely on tmRNA to deal with aberrant termination.

The E site of the ribosome plays a critical role in the entrance of tRNA into the ribosome.

Proteins are synthesized in the to __ direction by the ribosome.

Ribosome recycling factor (RRF)is another RNA molecule that resembles tRNA.

Which of the following statements is not true concerning the genetic code?

Peptidyl transferase activity can be inhibited in prokaryotic cells by penicillin.

A Brief History

The Molecular Nature of Genes

An Introduction to Gene Function

Molecular Cloning Methods

Molecular Tools for Studying Genes and Gene Activity

The Mechanism of Transcription in Bacteria

Operons: Fine Control of Bacterial Transcription

Major Shifts in Bacterial Transcription

Dna-Protein Interactions in Bacteria

Eukaryotic Rna Polymerases and Their Promoters

General Transcription Factors in Eukaryotes

Transcription Activators in Eukaryotes

Chromatin Structure and Its Effect on Transcription

Rna Processing I: Splicing

Rna Processing II: Capping and Polyadenylation

Rna Processing: Other Post-Transcriptional Events

The Mechanism of Translation I: Initiation

Ribosomes and Transfer Rna

Dna Replication,damage and Repair

Dna Replication II: Detailed Mechanism

Homologous Recombination

Transposition

Introduction to Genomics: Dna Sequencing on a Genomic Scale

Genomics II: Functional Genomics,proteomics and Bioinformatics

Filters

Exam 18: The Mechanism of Translation II: Elongation and Termination

Amber mutations are mutations that create termination codons in the middle of an mRNA causing premature translation termination.

tmRNA is involved in rescuing the ribosome from non-stop translation.

tmRNA resembles tRNA except for the fact that it lacks a(n)_________ and a _____ loop.

EF-Tu is an important protein in cells whose function is to

Which of the following characteristics is not a characteristic of a G protein?

Both prokaryotes and eukaryotes rely on tmRNA to deal with aberrant termination.

The E site of the ribosome plays a critical role in the entrance of tRNA into the ribosome.

Proteins are synthesized in the __________ to ____________ direction by the ribosome.

Ribosome recycling factor (RRF)is another RNA molecule that resembles tRNA.

Which of the following statements is not true concerning the genetic code?

Peptidyl transferase activity can be inhibited in prokaryotic cells by penicillin.

A Brief History

The Molecular Nature of Genes

An Introduction to Gene Function

Molecular Cloning Methods

Molecular Tools for Studying Genes and Gene Activity

The Mechanism of Transcription in Bacteria

Operons: Fine Control of Bacterial Transcription

Major Shifts in Bacterial Transcription

Dna-Protein Interactions in Bacteria

Eukaryotic Rna Polymerases and Their Promoters

General Transcription Factors in Eukaryotes

Transcription Activators in Eukaryotes

Chromatin Structure and Its Effect on Transcription

Rna Processing I: Splicing

Rna Processing II: Capping and Polyadenylation

Rna Processing: Other Post-Transcriptional Events

The Mechanism of Translation I: Initiation

Ribosomes and Transfer Rna

Dna Replication,damage and Repair

Dna Replication II: Detailed Mechanism

Homologous Recombination

Transposition

Introduction to Genomics: Dna Sequencing on a Genomic Scale

Genomics II: Functional Genomics,proteomics and Bioinformatics

Filters

tmRNA resembles tRNA except for the fact that it lacks a(n)_____ and a _ loop.

Proteins are synthesized in the to __ direction by the ribosome.