BMS 301 Molecular Biology: Control of Gene Expression Quiz

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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?

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?

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?

Mechanisms that reinforce cell memory in plants and animals Signup and view all the answers

What are some gene products that are common to all cells according to the text?

Ribosomal proteins and RNAs Signup and view all the answers

What is the typical percentage of genes expressed by a human cell at any one time?

30-60% Signup and view all the answers

How can a cell control the proteins it makes?

Transcriptional control and post-translational control Signup and view all the answers

What do transcription regulators recognize in the DNA?

Cis-regulatory sequences Signup and view all the answers

Which structural motifs do many protein-DNA recognition motifs use to bind to the major groove of DNA?

α helices or β sheets Signup and view all the answers

What does dimerization of transcription regulators do?

Increases the affinity and specificity of binding Signup and view all the answers

BMS 301 Molecular Biology: Control of Gene Expression Quiz

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Questions and Answers

What is the main focus of the chapter on control of gene expression?

Which type of proteins control transcription by binding to specific DNA sequences?

What is a characteristic of the gene product tyrosine aminotransferase mentioned in the text?

Which mechanisms create and maintain specialized cell types according to the text?

What are some gene products that are common to all cells according to the text?

What is the typical percentage of genes expressed by a human cell at any one time?

How can a cell control the proteins it makes?

What do transcription regulators recognize in the DNA?

Which structural motifs do many protein-DNA recognition motifs use to bind to the major groove of DNA?

What does dimerization of transcription regulators do?

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