Question 1

Significant in the deciphering of the genetic code was the discovery of the enzyme polynucleotide phosphorylase. What is this enzyme used for?

Accepted Answer

A)  manufacture of synthetic RNA for cell-free systems 
B)  ribosomal translocation 
C)  peptide bond formation 
D)  production of ribosomal proteins 
E)  degradation of RNA 
A)  manufacture of synthetic RNA for cell-free systems 
B)  ribosomal translocation 
C)  peptide bond formation 
D)  production of ribosomal proteins 
E)  degradation of RNA

Question 2

What is a nonsense mutation?

Accepted Answer

a termination triple

Question 3

What is the name given to the three bases in a messenger RNA that bind to the anticodon of tRNA to specify an amino acid placement in a protein?

Accepted Answer

A)  protein 
B)  anti-anticodon 
C)  cistron 
D)  rho 
E)  codon 
A)  protein 
B)  anti-anticodon 
C)  cistron 
D)  rho 
E)  codon

Question 4

When scientists were attempting to determine the structure of the genetic code, Crick and coworkers found that when three base additions or three base deletions occurred in a single gene, the wild-type phenotype was sometimes restored. These data supported the hypothesis that ________.

Accepted Answer

A)  the code is triplet 
B)  the code contains internal punctuation 
C)  AUG is the initiating triplet 
D)  the code is overlapping 
E)  there are three amino acids per base 
A)  the code is triplet 
B)  the code contains internal punctuation 
C)  AUG is the initiating triplet 
D)  the code is overlapping 
E)  there are three amino acids per base

Question 5

The triplet AUG is commonly used as a start codon during translation.

Accepted Answer

A) True 
 B)False

Question 6

RNA processing occurs when amino acids are removed from nascent proteins.

Accepted Answer

A) True 
 B)False

Question 7

A class of mutations that results in multiple contiguous (side-by-side) amino acid changes in proteins is probably caused by which of the following type of mutation?

Accepted Answer

A)  frameshift 
B)  transversion 
C)  transition 
D)  base analog 
E)  recombinant 
A)  frameshift 
B)  transversion 
C)  transition 
D)  base analog 
E)  recombinant

Question 8

Of the following three types of nucleic acids-DNA, mRNA, tRNA-which is most likely to contain modified bases?

Accepted Answer

The answer of Of the following three types of nucleic...

Question 9

There is some indication that the code is in some way ordered; a certain pattern exists. Describe an observation that supports this view.

Accepted Answer

Certain amino acids may be grouped accor

Question 10

Which of the following contains the three posttranscriptional modifications often seen in the maturation of mRNA in eukaryotes?

Accepted Answer

A)  5′-capping, 3′-poly(
A)  tail addition, splicing 
B)  3′-capping, 5′-poly(
A)  tail addition, splicing 
C)  removal of exons, insertion of introns, capping 
D)  5′-poly(
A)  tail addition, insertion of introns, capping 
E)  heteroduplex formation, base modification, capping 
A)  5′-capping, 3′-poly(
A)  tail addition, splicing 
B)  3′-capping, 5′-poly(
A)  tail addition, splicing 
C)  removal of exons, insertion of introns, capping 
D)  5′-poly(
A)  tail addition, insertion of introns, capping 
E)  heteroduplex formation, base modification, capping

Question 11

An intron is a section of ________.

Accepted Answer

A)  protein that is clipped out posttranslationally 
B)  RNA that is removed during RNA processing 
C)  DNA that is removed during DNA processing 
D)  transfer RNA that binds to the anticodon 
E)  carbohydrate that serves as a signal for RNA transport 
A)  protein that is clipped out posttranslationally 
B)  RNA that is removed during RNA processing 
C)  DNA that is removed during DNA processing 
D)  transfer RNA that binds to the anticodon 
E)  carbohydrate that serves as a signal for RNA transport

Significant in the deciphering of the genetic code was the discovery of the enzyme polynucleotide phosphorylase. What is this enzyme used for?

What is a nonsense mutation?

What is the name given to the three bases in a messenger RNA that bind to the anticodon of tRNA to specify an amino acid placement in a protein?

When scientists were attempting to determine the structure of the genetic code, Crick and coworkers found that when three base additions or three base deletions occurred in a single gene, the wild-type phenotype was sometimes restored. These data supported the hypothesis that ________.

The triplet AUG is commonly used as a start codon during translation.

RNA processing occurs when amino acids are removed from nascent proteins.

A class of mutations that results in multiple contiguous (side-by-side) amino acid changes in proteins is probably caused by which of the following type of mutation?

Of the following three types of nucleic acids-DNA, mRNA, tRNA-which is most likely to contain modified bases?

There is some indication that the code is in some way ordered; a certain pattern exists. Describe an observation that supports this view.

Which of the following contains the three posttranscriptional modifications often seen in the maturation of mRNA in eukaryotes?

An intron is a section of ________.

Introduction to Genetics

Mitosis and Meiosis

Mendelian Genetics

Extensions of Mendelian Genetics

Chromosome Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophages

Sex Determination and Sex Chromosomes

Chromosome Mutations: Variation in Number and Arrangement

Extranuclear Inheritance

DNA Structure and Analysis

DNA Replication and Recombination

DNA Organization in Chromosomes

Translation and Proteins

Gene Mutation, Dna Repair, and Transposition

Regulation of Gene Expression in Prokaryotes

Regulation of Gene Expression in Eukaryotes

Developmental Genetics

Cancer and Regulation of the Cell Cycle

Recombinant Dna Technology

Genomics, Bioinformatics, and Proteomics

Applications and Ethics of Genetic Engineering and Biotechnology

Quantitative Genetics and Multifactorial Traits

Neurogenetics

Population and Evolutionary Genetics

Filters

Exam 13: The Genetic Code and Transcription

Significant in the deciphering of the genetic code was the discovery of the enzyme polynucleotide phosphorylase. What is this enzyme used for?

What is a nonsense mutation?

What is the name given to the three bases in a messenger RNA that bind to the anticodon of tRNA to specify an amino acid placement in a protein?

When scientists were attempting to determine the structure of the genetic code, Crick and coworkers found that when three base additions or three base deletions occurred in a single gene, the wild-type phenotype was sometimes restored. These data supported the hypothesis that ________.

The triplet AUG is commonly used as a start codon during translation.

RNA processing occurs when amino acids are removed from nascent proteins.

A class of mutations that results in multiple contiguous (side-by-side) amino acid changes in proteins is probably caused by which of the following type of mutation?

Of the following three types of nucleic acids-DNA, mRNA, tRNA-which is most likely to contain modified bases?

There is some indication that the code is in some way ordered; a certain pattern exists. Describe an observation that supports this view.

Which of the following contains the three posttranscriptional modifications often seen in the maturation of mRNA in eukaryotes?

An intron is a section of ________.

Introduction to Genetics

Mitosis and Meiosis

Mendelian Genetics

Extensions of Mendelian Genetics

Chromosome Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophages

Sex Determination and Sex Chromosomes

Chromosome Mutations: Variation in Number and Arrangement

Extranuclear Inheritance

DNA Structure and Analysis

DNA Replication and Recombination

DNA Organization in Chromosomes

Translation and Proteins

Gene Mutation, Dna Repair, and Transposition

Regulation of Gene Expression in Prokaryotes

Regulation of Gene Expression in Eukaryotes

Developmental Genetics

Cancer and Regulation of the Cell Cycle

Recombinant Dna Technology

Genomics, Bioinformatics, and Proteomics

Applications and Ethics of Genetic Engineering and Biotechnology

Quantitative Genetics and Multifactorial Traits

Neurogenetics

Population and Evolutionary Genetics

Filters