gure 14.8 on page 354 r each section ab.cd write out in words what is going on w
ID: 148093 • Letter: G
Question
gure 14.8 on page 354 r each section ab.cd write out in words what is going on with each of the following in the cell. For study urposes, it might be a good idea to create a table of this information. a. Lactose b. Glucose C. CAMP d. Repressor e. CAP protein f. CAP site g. Operator h. RNA Polymerase and Promotor i. Transcription Probably the easiest way to organize this is with a table: This is in reference to the state of the molecules/sequences/processes involved irn the lac operon under different nutritional conditions (A, B, C and D). Molecule/Sequence/ A Lactose B No Lactose C Lactose D Glucose Process No Glucose No Glucose And No Lactose Glucose Lactose Glucose CAMP Repressor(as relates to operator) CAP protein CAP site Operator RNA Poly./Promotor TranscriptionExplanation / Answer
A
Lactose
No glucose
B
No Lactose
No Glucose
C
Lactose and
Glucose
D
Glucose
No Lactose
Molecule/ sequence/ processA
Lactose
No glucose
B
No Lactose
No Glucose
C
Lactose and
Glucose
D
Glucose
No Lactose
Lactose Induces Absent Induces Absent Glucose Absent Absent Represses Represses cAMP helps effectively no binding at CAP site As glucose is more, cAMP is available in less amount no binding at CAP site Repressor (as relates to operator) Inactive Active Inactive Active CAP protein Binding activates transcription No binding at CAP site makes complex with available cAMP no binding at CAP site CAP site CAP and cAMP complex binds here No CAP-cAMP complex bound available for binding No CAP-cAMP coplex bound Operator becomes active Inactive Active Inactive RNA poly. / Promotor Helps in transcription Not involved in transcription Active not involved in transcription Transcription Maximal transcription of lac operon genes No transcription genes for lactose metabolism is transcribed in small extent No transcriptionRelated Questions
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