Molecular Regulation - Microbiology An Evolving Science | Biology+

Course

Microbiology

Study Pack

Set 1: Microbial Life: Origin and Discovery

Set 2: Observing the Microbial Cell

Set 3: Cell Structure and Function

Set 4: Bacterial Culture, Growth, and Development

Set 5: Environmental Influences and Control of Microbial Growth

Set 7: Genomes and Chromosomes

Set 8: Transcription, Translation, and Bioinformatics

Set 9: Gene Transfer, Mutations, and Genome Evolution

Set 10: Molecular Regulation

Set 11: Viral Molecular Biology

Set 12: Biotechniques and Synthetic Biology

Set 13: Energetics and Catabolism

Set 14: Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Set 15: Biosynthesis

Set 16: Food and Industrial Microbiology

Set 17: Origins and Evolution

Set 18: Bacterial Diversity

Set 19: Archaeal Diversity

Set 20: Eukaryotic Diversity

Set 21: Microbial Ecology

Set 22: Microbes in Global Elemental Cycles

Set 23: Human Microbiota and Innate Immunity

Set 24: The Adaptive Immune Response

Set 25: Microbial Pathogenesis

Set 26: Microbial Diseases

Set 27: Antimicrobial Therapy

Set 28: Clinical Microbiology and Epidemiology

Set 10 Molecular Regulation

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Set 10 Molecular Regulation

(Multiple Choice)

Free

________ prevent transcription, whereas ________ stimulate transcription.

A) Activators; repressors
B) Inducers; corepressors
C) Corepressors; inducers
D) Regulators; repressors
E) Repressors; activators

Answer

(Multiple Choice)

Free

One benefit of operons in bacteria is that they

A) allow for alterations in DNA sequence by flipping promoters around.
B) allow for coordinated gene expression of related genes on one mRNA controlled by one promoter.
C) do not need ligands and regulatory proteins as single genes would.
D) do not need any modification of the proteins after they are expressed.
E) allow for the bacteria to utilize a wide variety of carbon sources.

Answer

(Multiple Choice)

Free

When an inducer is added to a medium containing an organism with a metabolic pathway controlled by a repressor, the inducer then

A) combines with the repressor and activates the repressor.
B) combines with the repressor and inactivates the repressor.
C) combines with the substrate and blocks induction.
D) combines with the substrate and activates induction.
E) does not combine with, but functions as a chaperone molecule for, the enzyme-substrate complex.

Answer