The Regulation Of Gene Expression - Beckers World of the Cell | Biology+

Course

Cell Biology

Study Pack

Set 1: A Preview of Cell Biology

Set 2: The Chemistry of the Cell

Set 3: The Macromolecules of the Cell

Set 4: Cells and Organelles

Set 5: Bioenergetics: the Flow of Energy in the Cell

Set 6: Enzymes: the Catalysts of Life

Set 7: Membranes: Their Structure,function,and Chemistry

Set 8: Transport Across Membranes: Overcoming the Permeability Barrier

Set 9: Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Set 10: Chemotrophic Energy Metabolism: Aerobic Respiration

Set 11: Phototrophic Energy Metabolism: Photosynthesis

Set 12: The Endomembrane System

Set 13: Cytoskeletal Systems

Set 14: Cellular Movement: Motility and Contractility

Set 15: Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

Set 16: The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

Set 17: DNA Replication, repair, and Recombination

Set 18: Gene Expression: Ithe Genetic Code and Transcription

Set 19: Gene Expression: Iiprotein Synthesis and Sorting

Set 20: The Regulation of Gene Expression

Set 21: Molecular Biology Techniques for Cell Biology

Set 22: Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Set 23: Signal Transduction Mechanisms: Iimessengers and Receptors

Set 24: The Cell Cycle and Mitosis

Set 25: Sexual Reproduction,meiosis,and Genetic Recombination

Set 20 The Regulation Of Gene Expression

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Set 20 The Regulation Of Gene Expression

(Multiple Choice)

Free

You are examining a bacterial enzyme associated with glycolysis.You would expect expression of the enzyme to be

A)amplified when glucose is depleted.
B)induced by glucose.
C)repressed by glucose.
D)induced when ATP concentrations in the cell are high.
E)controlled by a riboswitch.

Answer

(Multiple Choice)

Free

The situation in which an active regulatory protein "turns on" gene expression is an example of

A)feedback inhibition.
B)positive control.
C)negative control.
D)constitutive gene elements.
E)a mutation.

Answer

(Multiple Choice)

Free

The chromosome of a bacterial cell possesses the following genotype with regard to the lac operon: I⁻O⁺Z⁺Y⁻A⁻.This bacterial cell would

A)make β-galactosidase in the presence of lactose.
B)make β-galactosidase independently of lactose.
C)make β-galactosidase and galactoside permease in the presence of lactose.
D)make transacetylase in the presence of lactose.
E)make no lac gene products.

Answer