4a. The diagram below represents (a) the lac operon in the OFF state and (b) lac operon in the ON state. Assign labels to letters A-F based on known components in the pathway. The lac operon Орeron А. A B a) Absence of lactose Regulator Structural genes gene (lacl) lacZ lacY lacA В. Transcription and translation No transcription С. D. Е. b) Presence of lactose B F. Transcription and translation Transcription and translation Enzymes Permease Transacetylase Glucose B-Galactosidase Galactose Lactose 4b. Briefly describe the changes in gene expression that happen in the lac operon when lactose is present in the cell. Include changes in the action of RNA polymerase and the lac repressor protein.
4a. The diagram below represents (a) the lac operon in the OFF state and (b) lac operon in the ON state. Assign labels to letters A-F based on known components in the pathway. The lac operon Орeron А. A B a) Absence of lactose Regulator Structural genes gene (lacl) lacZ lacY lacA В. Transcription and translation No transcription С. D. Е. b) Presence of lactose B F. Transcription and translation Transcription and translation Enzymes Permease Transacetylase Glucose B-Galactosidase Galactose Lactose 4b. Briefly describe the changes in gene expression that happen in the lac operon when lactose is present in the cell. Include changes in the action of RNA polymerase and the lac repressor protein.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Transcribed Image Text:4a. The diagram below represents (a) the lac operon in the OFF state and (b) lac operon in the ON state.
Assign labels to letters A-F based on known components in the pathway.
The lac operon
Operon
A.
a) Absence of lactose Regulator
gene (lact)
A
Structural genes
lacZ
lacY
lacA
В.
Transcription
and translation
No transcription
С.
D
D.
A
E.
b) Presence of lactose
B
F.
Transcription
and translation
Transcription
and translation
Enzymes
Permease Transacetylase
Glucose
B-Calactosidase
Galactose
Lactose
4b. Briefly describe the changes in gene expression that happen in the lac operon when lactose is present
in the cell. Include changes in the action of RNA polymerase and the lac repressor protein.
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