Lac operon Study guides, Class notes & Summaries
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BIO 331 Exam 3 Questions With Correct Answers
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operon - Answer a series of genes whose expression is co-regulated by controlling their common mRNA transcript 
 
lacZ gene - Answer structural gene in lac operon which codes for beta-galactosidase, to break down beta-galactosides (which includes lactose) into glucose and galactose 
 
lacY gene - Answer structural gene in lac operon which codes for permease, which transports beta-galactosides into the cell. permeases are membrane bound 
 
lacA gene - Answer structural gene in lac operon which co...
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Biology 2 Exam Lac Operon Questions And Answers 2023
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Biology 2 Exam Lac Operon Questions And Answers 2023
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QBM Exam Questions And Answers With Complete Solutions 2024
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QBM Exam Questions And Answers With 
Complete Solutions 2024 
What are the first three steps for starting a project? - answer1 ) Choose 
2) Read literature 
3) Obtain DNA sequence 
Once you obtain the DNA sequence in the beginning of a project, BLAST will allow what? - 
answer"Basic Local Alignment Search Tool" 
- To search for homology (duplication events) 
- Can predict protein, molecular weight, pI, and extinction coefficient 
- Predict the secondary/tertiary structure, transmembrane helice...
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Microbiology Exam #3 Questions with Complete Correct Answers | Grade A+
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All of the following are characteristics that make plasmids good cloning vectors, except 
A. they are small 
B. they are well characterized 
C. they can be transferred into appropriate host cells 
D. they can carry genetic markers, such as antibiotic resistance genes 
E. they can accept a relatively large amount of foreign DNA 
Ans: E. they can accept a relatively large amount of foreign DNA 
Types of Plasmids: 
-Fertility Factors 
-Resistance Factors 
-Bacteriocin Factors 
-Virulence Plasmids 
...
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Exam 1 LMR questions and answers
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Draw out medically important bacteria 
Lac operon sequence 
lacl, codes for repressor, C-P-O, ZYA 
Example of a isoform 
tropomyosin, an actin filament binding protein 
3 functions of RNAi naturally in body 
proliferation, differnetiation, apoptosis 
What is miRNA 
double stranded RNA with guide sequence, binds to mRNA and RISC to form RISC 
complex to degrade mRNA for gene regulation 
What is RISC 
RNA induced silencing complex 
Artifcial RNAi 
siRNA- short infererence RNAs 
Explain mRNA editin...
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ASU BIO 340 EXAM 3 QUESTIONS AND ANSWERS
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What will be the effect on transcription when an inhibitor is in play? 
A. Allow transcription B. Prevent transcription - Answer-B Explanation: An inhibitor prevents activator from binding to DNA; activators are used in positive regulation (increasing transcription) - thus, the inhibitor prevents the activator from positive regulating (increasing) transcription. 
 
What will be the effect on transcription when an inducer is in play? 
A. Allow transcription B. Prevent transcription - Answer-A Ex...
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ASU BIO 340 EXAM 3
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What will be the effect on transcription when an inhibitor is in play? 
A. Allow transcription B. Prevent transcription - Answer-B Explanation: An inhibitor prevents activator from binding to DNA; activators are used in positive regulation (increasing transcription) - thus, the inhibitor prevents the activator from positive regulating (increasing) transcription. 
 
What will be the effect on transcription when an inducer is in play? 
A. Allow transcription B. Prevent transcription - Answer-A Ex...
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Lac Operon Review Exam Questions And Answers 2023
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Lac Operon Review Exam Questions And Answers 2023
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MileDown MCAT Biology Questions and Answers | Latest Update | 2024/2025 | 100% Verified
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MileDown MCAT Biology Questions and 
Answers | Latest Update | 2024/2025 | 
 
100% Verified 
 
What is the role of the myelin sheath in neural transmission? 
 
The myelin sheath insulates axons, allowing for faster transmission of electrical impulses 
along the neuron through saltatory conduction. 
 
Describe the process of endocytosis in cellular transport. 
 
Endocytosis is a process where the cell membrane engulfs extracellular material, forming a 
vesicle that brings the material into the ce...
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Bio 2000 Exam 3 Study Guide- Questions with Correct Answers
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the lac operon is expressed when glucose is low and lactose is high 
when in a complex with ____, the CAP protein binds to the CAP site and _____ the expression of lac operon. cAMP; switches on 
in the absence of lactose, the lac repressor is active and can bind to the operator 
which region associated with the lac operon is not involved in the binding of RNA polymerase? lacZ 
RNA polymerase binds to the promoter 
the most efficient control of eukaryotic gene expression is achieved at the level ...
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