Control Of Gene Expression - Campbell Biology | Biology+

Course

General Biology

Study Pack

Set 1: Biology and Its Themes

Set 2: Atoms and Molecules

Set 3: The Chemistry of Water

Set 4: Carbon: the Basis of Molecular Diversity

Set 5: Biological Macromolecules and Lipids

Set 6: Energy and Life

Set 7: Cell Structure and Function

Set 8: Cell Membranes

Set 9: Cellular Signaling

Set 10: Cell Respiration

Set 11: Photosynthetic Processes

Set 12: Mitosis

Set 13: Sexual Life Cycles and Meiosis

Set 14: Mendelian Genetics

Set 15: Linkage and Chromosomes

Set 16: Nucleic Acids and Inheritance

Set 17: Expression of Genes

Set 18: Control of Gene Expression

Set 19: Dna Technology

Set 20: The Evolution of Genomes

Set 21: How Evolution Works

Set 22: Phylogenetic Reconstruction

Set 23: Microevolution

Set 24: Species and Speciation

Set 25: Macroevolution

Set 26: Introduction to Viruses

Set 27: Prokaryotes

Set 28: The Origin and Evolution of Eukaryotes

Set 29: Nonvascular and Seedless Vascular Plants

Set 30: Seed Plants

Set 31: Introduction to Fungi

Set 32: An Introduction to Animal Diversity

Set 33: Invertebrates

Set 34: Vertebrates

Set 35: Plant Structure and Growth

Set 36: Transport in Vascular Plants

Set 37: Plant Nutrition

Set 38: Reproduction of Flowering Plants

Set 39: Plant Signals and Behavior

Set 40: The Animal Body

Set 41: Chemical Signals in Animals

Set 42: Animal Digestive Systems

Set 43: Animal Transport Systems

Set 44: Animal Excretory Systems

Set 45: Animal Reproductive Systems

Set 46: Development in Animals

Set 47: Animal Defenses Against Infection

Set 48: Electrical Signals in Animals

Set 49: Neural Regulation in Animals

Set 50: Sensation and Movement in Animals

Set 51: An Overview of Ecology

Set 52: Behavioral Ecology

Set 53: Populations and Life History Traits

Set 54: Biodiversity and Communities

Set 55: Energy Flow and Chemical Cycling in Ecosystems

Set 56: Conservation and Global Ecology

Set 18 Control Of Gene Expression

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Set 18 Control Of Gene Expression

(Multiple Choice)

Free

If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?

A) The three genes of the lac operon will be expressed normally.
B) RNA polymerase will no longer transcribe permease.
C) The operon will still transcribe the lacZ and lacY genes, but the mRNA will not be translated.
D) Beta galactosidase will not be produced.

Answer

(Multiple Choice)

Free

Under what conditions does the trp repressor block transcription of the trp operon?

A) when the repressor binds to the inducer
B) when the repressor binds to tryptophan
C) when the repressor is not bound to RNA polymerase
D) when the repressor is not bound to the operator

Answer

(Multiple Choice)

Free

A rise in extracellular glucose results in which of the following changes at the lac operon?

A) RNA polymerase binds the lac promoter with greater affinity
B) cAMP receptor protein (CRP) detaches from the lac promoter
C) lac repressor is allosterically inactivated
D) lac operator binds inducer with greater affinity

Answer