Question 1

What chemical modification of host DNA is used to protect it against cleavage by the host's own restriction enzymes?

Accepted Answer

A) methylation 
B) phosphorylation 
C) acetylation 
D) conversion of some cytosine to uracil 
E) conversion of some guanosine to inosine 
A) methylation 
B) phosphorylation 
C) acetylation 
D) conversion of some cytosine to uracil 
E) conversion of some guanosine to inosine

Question 2

What is present in many eukaryotic genes that drastically increases the size of eukaryotic DNA, but are not present in prokaryotic genes?

Accepted Answer

A) satellite DNA 
B) long interspersed elements 
C) Alu sequences 
D) exons 
E) introns 
A) satellite DNA 
B) long interspersed elements 
C) Alu sequences 
D) exons 
E) introns

Question 3

A pseudogene is a ___________.

Accepted Answer

A) gene that codes for a non-functional protein 
B) nonexpressed gene 
C) mutated gene 
D) gene with multiple promoter regions that causes the start of transcription to be mistaken 
E) none of the above 
A) gene that codes for a non-functional protein 
B) nonexpressed gene 
C) mutated gene 
D) gene with multiple promoter regions that causes the start of transcription to be mistaken 
E) none of the above

Question 4

Southern analysis of an individual DNA sample with an overall size of 10.1 kbp using a restriction enzyme that recognized a 6-base restriction site gave the following results. If the same test was performed on a different individual and four bands were seen in the analysis, what would the result look like and why?
Sample DNA size markers

Accepted Answer

The expected results would look somethin

Question 5

Which of the following describes a proper organization sequence for DNA in the nucleus?

Accepted Answer

A) DNA helix $\rarr$ nucleosome $\rarr$chromatin fiber $\rarr$condensed fiber 
B) DNA helix $\rarr$chromatin fiber $\rarr$nucleosome $\rarr$ condensed fiber 
C) DNA helix $\rarr$ condensed fiber $\rarr$ nucleosome $\rarr$ chromatin fiber 
D) DNA helix $\rarr$ nucleosome $\rarr$ condensed fiber $\rarr$ chromatin fiber 
E) none of the above 
A) DNA helix $\rarr$ nucleosome $\rarr$chromatin fiber $\rarr$condensed fiber 
B) DNA helix $\rarr$chromatin fiber $\rarr$nucleosome $\rarr$ condensed fiber 
C) DNA helix $\rarr$ condensed fiber $\rarr$ nucleosome $\rarr$ chromatin fiber 
D) DNA helix $\rarr$ nucleosome $\rarr$ condensed fiber $\rarr$ chromatin fiber 
E) none of the above

What chemical modification of host DNA is used to protect it against cleavage by the host's own restriction enzymes?

What is present in many eukaryotic genes that drastically increases the size of eukaryotic DNA, but are not present in prokaryotic genes?

A pseudogene is a ___________.

Which of the following describes a proper organization sequence for DNA in the nucleus?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

Introduction to Proteins: the Primary Level of Protein Structure

The Three-Dimensional Structure of Proteins

Protein Function and Evolution

Contractile Proteins and Molecular Motors

Carbohydrates: Sugars, Saccharides, Glycans

Lipids, Membranes and Cellular Transport

Enzymes: Biological Catalysts

Chemical Logic of Metabolism

Carbohydrate Metabolism: Glycolysis, Gluconeogenesis, Glycogen Metabolism, and the Pentose Phosphate Pathway

Citric Acid Cycle and Glyoxylate Cycle

Electron Transport, Oxidative Phosphorylation, and Oxygen Metabolism

Photosynthesis

Lipid Metabolism I: Fatty Acids, Triacylglycerols, and Lipoproteins

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Lipid Metabolism Ii: Membrane Lipids, Steroids, Isoprenoids, and Eicosanoids

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, Utilization, and Turnover

Metabolism of Nitogenous Compounds II: Amino Acids, Porphyrins, and Neurotransmitters

Nucleotide Metabolism

Mechanisms of Signal Transduction

DNA Replication

DNA Restructuring: Repair, Recombination, Rearrangement, Amplification

Information Readout: Transcription and Post-Transcriptional Processing

Information Decoding: Translation and Post-Translational Protein Processing

Regulation of Gene Expression

Filters

Exam 24: Genes, Genomes and Chromosomes

What chemical modification of host DNA is used to protect it against cleavage by the host's own restriction enzymes?

What is present in many eukaryotic genes that drastically increases the size of eukaryotic DNA, but are not present in prokaryotic genes?

A pseudogene is a ___________.

Which of the following describes a proper organization sequence for DNA in the nucleus?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

Introduction to Proteins: the Primary Level of Protein Structure

The Three-Dimensional Structure of Proteins

Protein Function and Evolution

Contractile Proteins and Molecular Motors

Carbohydrates: Sugars, Saccharides, Glycans

Lipids, Membranes and Cellular Transport

Enzymes: Biological Catalysts

Chemical Logic of Metabolism

Carbohydrate Metabolism: Glycolysis, Gluconeogenesis, Glycogen Metabolism, and the Pentose Phosphate Pathway

Citric Acid Cycle and Glyoxylate Cycle

Electron Transport, Oxidative Phosphorylation, and Oxygen Metabolism

Photosynthesis

Lipid Metabolism I: Fatty Acids, Triacylglycerols, and Lipoproteins

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Lipid Metabolism Ii: Membrane Lipids, Steroids, Isoprenoids, and Eicosanoids

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, Utilization, and Turnover

Metabolism of Nitogenous Compounds II: Amino Acids, Porphyrins, and Neurotransmitters

Nucleotide Metabolism

Mechanisms of Signal Transduction

DNA Replication

DNA Restructuring: Repair, Recombination, Rearrangement, Amplification

Information Readout: Transcription and Post-Transcriptional Processing

Information Decoding: Translation and Post-Translational Protein Processing

Regulation of Gene Expression

Filters