Lac operon Study guides, Class notes & Summaries
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BIOL 3025 STUDY GUIDE TEST.
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BIOL 3025 STUDY GUIDE TEST. 
 
 
The lac operon is expressed when 
A) glucose is high and lactose is absent. 
B) glucose is low and lactose is absent. 
C) glucose is low, regardless of the presence or absence of lactose. 
D) glucose is high and lactose is present. 
E) glucose is low and lactose is present. - CORRECT ANSWER E 
 
When in a complex with ________, the CAP protein binds to the CAP site and ________ the expression of the lac operon. 
A) glucose ; switches on 
B) lactose ; switches on ...
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Genetics, Third Exam: Lac Operon Exam With Complete Solutions 2023
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Genetics, Third Exam: Lac Operon Exam With Complete Solutions 2023
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Exam 1 LMR questions and answers
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Exam 1 LMR questions and answers 
 
 
 
 
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 sil...
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MICR 3033 Exam #4 Questions with complete solutions
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All cells that make up an organism contain the exact same DNA sequence (genome) however individual cell-types look and function very differently. Why? Correct Answer-each cell-type expresses a unique set of genes of the genomic DNA. 
 
Speaking of genotype and phenotype how are these terms defined? Correct Answer-the genotype defines the genetic information (gene) and the phenotype the outcome of gene expression. 
 
Which of the following describes a functional gene? Correct Answer-a gene is def...
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BIO 1A03 Test 2 Review (2023/2024) Already Graded A
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BIO 1A03 Test 2 Review (2023/2024) Already Graded A What is needed for prokaryote growth Nutrient-rich environment containing amino acids, carbohydrates, vitamins, nucleotides, favourable temperature 
housekeeping genes required all the time for vital functions Constitutively expressed includes structural proteins, ribosomal proteins, RNAP, DNAP allow for constant maintenance 
Regulated genes turned on/off when needed includes enzymes needed to channel growth/division 
Beta-Glalactosidase enzyme...
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Lac Operon Summary
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In depth summary of the lac operon content covered
![BIO 111 FINAL EXAM QUESTIONS AND ANSWERS LATEST 2024/2025 (100% CORRECT)](/docpics/4716143/65eeccd0e9291_4716143_121_171.jpeg)
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BIO 111 FINAL EXAM QUESTIONS AND ANSWERS LATEST 2024/2025 (100% CORRECT)
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BIO 111 FINAL EXAM QUESTIONS AND ANSWERS LATEST 2024/2025 (100% CORRECT) What is the first mRNA processing step? - ANSWER 5' capping 
Different mRNAs are made from the same initial pre-mRNA by ________. - ANSWER 
alternative splicing 
RNA transcription begins at a ________. - ANSWER promoter 
________ protect(s) the pre-mRNA molecule. - ANSWER the 3' poly-a tail 
The process of pre-mRNA splicing removes ________. - ANSWER introns 
Spliced ________ differ in their exons. - ANSWER mRNAs 
Identif...
![CBE 235 Final Question and answers rated A+ 2023/2024](/docpics/4033429/657cf56e28033_4033429_121_171.jpeg)
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CBE 235 Final Question and answers rated A+ 2023/2024
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CBE 235 Final Question and answers rated A+ 2023/2024 Lac Operon - correct answer -involved in heating lactose: inducible operon 
1) The lactose repressor protein coded by Lacl bound to the operator tightly near the mRNA start site, blocking the ability of RNA poly to bind 
2) Lactose introduced--> Lac repressor binds to lactose and changes conformation such that it can no longer bond to the operator 
3) RNA poly can access the promoter and transcription goes 
4) LacZ,LacY,LacA are transcribe...
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CBE 235 Final questions with 100% correct answers 2024
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CBE 235 FinalLac Operon - correct answer -involved in heating lactose: inducible operon 
1) The lactose repressor protein coded by Lacl bound to the operator tightly near the mRNA start site, blocking the ability of RNA poly to bind 
2) Lactose introduced--> Lac repressor binds to lactose and changes conformation such that it can no longer bond to the operator 
3) RNA poly can access the promoter and transcription goes 
4) LacZ,LacY,LacA are transcribed 
 
Gregor Mendel Experiment - correct a...
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Micro 201 Exam 3 (3) - Lac Operon With Complete Solutions 2023
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Micro 201 Exam 3 (3) - Lac Operon With Complete Solutions 2023
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