One way to control metabolic pathways, or other conditions that involve proteins, is to regulate the rate of production of a protein/enzyme. This is called controlling gene expression (gene expression is another term used for protein synthesis). Because organisms have several thousand genes, it would be inefficient and harmful to continually express (continually make proteins from) all genes. Increasing the rate of gene expression is called upregulation of the gene; decreasing the rate of gene expression is called downregulation of the gene. Determine whether each of the following conditions would result in the genes of the lac operon being upregulated or downregulated. a) RNA polymerase is able to move along the lac operon upregulation b) Allolactose binds to the repressor protein upregulation c) Lactose concentration within a cell is increased upregulation d) Allolactose concentration within a cell is increased upregulation e) Glucose is not available upregulation f) Active repressor proteins are present in the absence of allolactose downregulation

One way to control metabolic pathways, or other conditions that involve proteins, is to regulate the rate of production of a protein/enzyme. This is called controlling gene expression (gene expression is another term used for protein synthesis). Because organisms have several thousand genes, it would be inefficient and harmful to continually express (continually make proteins from) all genes. Increasing the rate of gene expression is called upregulation of the gene; decreasing the rate of gene expression is called downregulation of the gene. Determine whether each of the following conditions would result in the genes of the lac operon being upregulated or downregulated. a) RNA polymerase is able to move along the lac operon upregulation b) Allolactose binds to the repressor protein upregulation c) Lactose concentration within a cell is increased upregulation d) Allolactose concentration within a cell is increased upregulation e) Glucose is not available upregulation f) Active repressor proteins are present in the absence of allolactose downregulation

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter9: Gene Expression And Gene Regulation

Section: Chapter Questions

Problem 18QP: The following is a portion of a protein: met-trp-tyr-arg-gly-pro-thr-Various mutant forms of this...

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