Question 1

Inactivated X chromsomes form dark spots in the nucleus known as ________.

Accepted Answer

The answer of Inactivated X chromsomes form dark spots in...

Question 2

How can you determine the type of regulatory control associated with a newly identified bacterial protein?

Accepted Answer

Many possibilities a

Question 3

Which of the following is an example of translational regulation?

Accepted Answer

A) protein degradation 
B) DNA splicing 
C) protein folding 
D) mRNA degradation 
E) DNA methylation 
A) protein degradation 
B) DNA splicing 
C) protein folding 
D) mRNA degradation 
E) DNA methylation

Question 4

In the lac operon,Iˢ mutations allow

Accepted Answer

A) constitutive expression of Lac proteins. 
B) regulated expression of Lac proteins. 
C) β-galactosidase activity only. 
D) no expression of Lac proteins. 
E) none of the above 
A) constitutive expression of Lac proteins. 
B) regulated expression of Lac proteins. 
C) β-galactosidase activity only. 
D) no expression of Lac proteins. 
E) none of the above

Question 5

Transcriptionally active chromatin has a large content of ________ proteins,nonhistone proteins associated with chromatin.

Accepted Answer

high-mobil

Question 6

You are working with a gene associated with an essential pathway that is necessary at two time points in an organism's lifetime.With regard to gene regulation,you would expect the gene to be

Accepted Answer

A) not constitutive. 
B) associated with response to distinct events. 
C) "activated" by particular signals (induced). 
D) "turned off" by particular signals (repressed). 
E) all of the above 
A) not constitutive. 
B) associated with response to distinct events. 
C) "activated" by particular signals (induced). 
D) "turned off" by particular signals (repressed). 
E) all of the above

Question 7

Regulation of genes between regulatory transcription factors and the RNA polymerase complex is mediated by

Accepted Answer

A) enhancers. 
B) silencers. 
C) cofactors. 
D) coactivators. 
E) sigma factors. 
A) enhancers. 
B) silencers. 
C) cofactors. 
D) coactivators. 
E) sigma factors.

Question 8

The ________ experiments use an initial exposure to a radioactive compound in the mRNA followed by monitoring of the radioactive compound to determine its fate in the cell.

Accepted Answer

pulse-char

Question 9

Discuss how DNA methylation is associated with genomic imprinting.Be sure to use examples.

Accepted Answer

During embryogenesis,information specifi

Question 10

Effector molecules

Accepted Answer

A) are associated with the induction of enzyme synthesis. 
B) are associated with the repression of enzyme synthesis. 
C) induce conformational changes. 
D) are often small organic molecules. 
E) all of the above 
A) are associated with the induction of enzyme synthesis. 
B) are associated with the repression of enzyme synthesis. 
C) induce conformational changes. 
D) are often small organic molecules. 
E) all of the above

Question 11

Which of the following processes is associated with the altering of histone proteins in vivo?

Accepted Answer

A) acetylation 
B) alkylation 
C) methylation 
D) transhydroxylation 
E) both choices A and C 
A) acetylation 
B) alkylation 
C) methylation 
D) transhydroxylation 
E) both choices A and C

Question 12

The nucleus of a differentiated cell contains all of the genetic information necessary to direct the development of an entire organism.This nucleus is therefore said to be ________.

Accepted Answer

The answer of The nucleus of a differentiated cell contains...

Question 13

Changes in gene expression that are not the result of changes to the gene itself are known as ________ changes.

Accepted Answer

The answer of Changes in gene expression that are not...

Question 14

Which of the following does not apply to eukaryotic gene regulation?

Accepted Answer

A) gene regulation by attenuation 
B) regulation as a result of compartmentalization 
C) mRNA degradation (turnover) 
D) protein degradation (turnover) 
E) protein folding 
A) gene regulation by attenuation 
B) regulation as a result of compartmentalization 
C) mRNA degradation (turnover) 
D) protein degradation (turnover) 
E) protein folding

Question 15

A lacOᶜ mutant would

Accepted Answer

A) never make lac structural genes. 
B) be constitutively expressed. 
C) bind receptor protein. 
D) have repressed expression. 
E) be able to be induced by lactose. 
A) never make lac structural genes. 
B) be constitutively expressed. 
C) bind receptor protein. 
D) have repressed expression. 
E) be able to be induced by lactose.

Question 16

You are examining an enzyme associated with mannose catabolism.As such,you would expect the protein to be

Accepted Answer

A) degraded. 
B) a hormone. 
C) induced by mannose. 
D) expressed only during development. 
E) expressed only in neurons. 
A) degraded. 
B) a hormone. 
C) induced by mannose. 
D) expressed only during development. 
E) expressed only in neurons.

Question 17

An individual that is XXY has ________ Barr body(ies)in their cells.

Accepted Answer

The answer of An individual that is XXY has ________...

Question 18

DNA rearrangements in vertebrates occur in the

Accepted Answer

A) glycolysis genes. 
B) cell surface protein genes. 
C) viral protein genes. 
D) antibody genes. 
E) none of the above 
A) glycolysis genes. 
B) cell surface protein genes. 
C) viral protein genes. 
D) antibody genes. 
E) none of the above

Question 19

The degradation of mRNA in the cells occurs in clusters known as

Accepted Answer

A) iRNA sites. 
B) sRNA regions. 
C) nuceoli. 
D) P bodies. 
E) N sites. 
A) iRNA sites. 
B) sRNA regions. 
C) nuceoli. 
D) P bodies. 
E) N sites.

Exam 23: The Regulation of Gene Expression

Inactivated X chromsomes form dark spots in the nucleus known as ________.

How can you determine the type of regulatory control associated with a newly identified bacterial protein?

Which of the following is an example of translational regulation?

In the lac operon,Iˢ mutations allow

Transcriptionally active chromatin has a large content of ________ proteins,nonhistone proteins associated with chromatin.

You are working with a gene associated with an essential pathway that is necessary at two time points in an organism's lifetime.With regard to gene regulation,you would expect the gene to be

Regulation of genes between regulatory transcription factors and the RNA polymerase complex is mediated by

The ________ experiments use an initial exposure to a radioactive compound in the mRNA followed by monitoring of the radioactive compound to determine its fate in the cell.

Discuss how DNA methylation is associated with genomic imprinting.Be sure to use examples.

Effector molecules

Which of the following processes is associated with the altering of histone proteins in vivo?

The nucleus of a differentiated cell contains all of the genetic information necessary to direct the development of an entire organism.This nucleus is therefore said to be ________.

Changes in gene expression that are not the result of changes to the gene itself are known as ________ changes.

Which of the following does not apply to eukaryotic gene regulation?

A lacOᶜ mutant would

You are examining an enzyme associated with mannose catabolism.As such,you would expect the protein to be

An individual that is XXY has ________ Barr body(ies)in their cells.

DNA rearrangements in vertebrates occur in the

The degradation of mRNA in the cells occurs in clusters known as

A Preview of the Cell

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure, function, and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System and Peroxisomes

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: DNA, chromosomes, and the Nucleus

The Cell Cycle, DNA Replication, and Mitosis

Sexual Reproduction, meiosis, and Genetic Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

Cancer Cells

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