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Questions and Answers
What is the main focus of the chapter on control of gene expression?
What is the main focus of the chapter on control of gene expression?
- The mechanisms that enable selective gene expression in different cell types (correct)
- The synthesis of different sets of RNAs and proteins in specialized cells
- The differences between mammalian neuron and liver cell genomes
- The common processes and gene products in all cells
Which type of proteins control transcription by binding to specific DNA sequences?
Which type of proteins control transcription by binding to specific DNA sequences?
- Metabolic enzymes
- Structural proteins of chromosomes
- Transcription regulators (correct)
- DNA repair enzymes
What is a characteristic of the gene product tyrosine aminotransferase mentioned in the text?
What is a characteristic of the gene product tyrosine aminotransferase mentioned in the text?
- It is abundant in all cell types
- It is a DNA repair enzyme
- It is highly expressed in specialized cells (correct)
- It is a structural protein of chromosomes
Which mechanisms create and maintain specialized cell types according to the text?
Which mechanisms create and maintain specialized cell types according to the text?
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What are some gene products that are common to all cells according to the text?
What are some gene products that are common to all cells according to the text?
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What is the typical percentage of genes expressed by a human cell at any one time?
What is the typical percentage of genes expressed by a human cell at any one time?
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How can a cell control the proteins it makes?
How can a cell control the proteins it makes?
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What do transcription regulators recognize in the DNA?
What do transcription regulators recognize in the DNA?
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Which structural motifs do many protein-DNA recognition motifs use to bind to the major groove of DNA?
Which structural motifs do many protein-DNA recognition motifs use to bind to the major groove of DNA?
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What does dimerization of transcription regulators do?
What does dimerization of transcription regulators do?
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