Lac-operon Studienführer, Klassennotizen & Zusammenfassungen
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AP Biology Reading Guide Chapter 15 and 16: Regulation of Gene Expression & Development, Stem Cells and Cancer
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AP Biology Reading Guide Chapter 15 and 16: Regulation of Gene Expression & Development, Stem Cells and Cancer. 
Compare and contrast the lac operon and the trp operon. (Remember that compare means “to tell how 
they are similar,” and contrast means “to tell how they are different.”) 
Lac is inducible and trp operon is repressible. They both have the three components of an operon: an 
operator, promoter, and regulatory gene. They are different because the trp repressor is inactive alone ...
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AGR 3303 Exam 2 T/F Questions WITH COMPLETE SOLUTIONS
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Regulatory genes are genes whose products control the transcription or translation of other genes correct answer: True 
 
In bacterial operon, promoter is bound by regulator protein to regulate transcription correct answer: False 
 
A repressible gene should be under control by a repressor correct answer: False 
 
For a gene under negative control, the regulator protein is a repressor correct answer: True 
 
For a gene under positive inducible control, regulator protein is a activator and no...
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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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CBE 235 Final questions well answered 2023/2024
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CBE 235 Final.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 transcribed 
 
Gregor Mendel Experiment - correct ...
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Ap Bio Chapter 18 Practice Test 99 Questions with Verified Answers,100% CORRECT
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Ap Bio Chapter 18 Practice Test 99 Questions with Verified Answers 
 
The role of a metabolite that controls a repressible operon is to - CORRECT ANSWER e) bind to the repressor protein and activate it 
 
The tryptophan operon is a repressible operon that is - CORRECT ANSWER E) turned off whenever tryptophan is added to the growth medium. 
 
Which of the following is a protein produced by a regulatory gene? - CORRECT ANSWER D) repressor 
 
A lack of which molecule would result in the cell's ina...
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Bio 205 Final WWU correctly answered graded A+ 2023 passed
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Bio 205 Final WWU correctly answered graded A+ 2023 passedCalvin Cycle - correct answer Light independent 
Reduction of carbon dioxide in organic compounds 
3 phases: fixation, reduction, regeneration 
 
The Lac Operon - correct answer combines positive and negative control mechanisms to control protein production 
 
Photorespiration - correct answer occurs when there is a high concentration of oxygen relative to carbon dioxide 
 
Catabolism - correct answer the breakdown of complex molecules i...
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BIO 111 FINAL EXAM QUESTIONS AND ANSWERS LATEST UPDATED 2024/2025 | 100% CORRECT
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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 
Identify the three phases of transcription. - ANSWER initiation, elongation, 
te...
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BIO 207 EXAM2 PRACTICE TEST FROM STUDY GUIDE 49 Questions with Verified Answers,100% CORRECT
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BIO 207 EXAM2 PRACTICE TEST FROM STUDY GUIDE 49 Questions with Verified Answers 
 
Which of the following molecules links glycolysis with the TCA cycle, and also serves as a precursor for many biosynthetic products? 
a. malate 
b. citrate 
c. oxaloacetate 
d. acetyl-CoA 
e. succinate - CORRECT ANSWER d. acetyl-CoA 
 
What methods do microorganisms NOT use to minimize energy for biosynthesis? 
a. Inhibit or kill nutritional competitors by making antimicrobials 
b. Loss of genes encoding enzymes f...
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BIO110 PRACTICE EXAM 4|165 Questions with Verified Answers,100% CORRECT
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BIO110 PRACTICE EXAM 4|165 Questions with Verified Answers 
 
TRNA has a few loops in its structure, what loops connects to the mRNA codon? 
a. codon domain 
b. anticodon 
c. acodon 
d. amino acid - CORRECT ANSWER b. anticodon 
 
Catabolite activator protein: 
a. increases the affinity of the promoter region for RNA polymerase 
b. decreases RNA polymerase activity 
c. becomes nonfunctional when it binds to AMP 
d. binds and activates RNA polymerase 
e. blocks RNA polymerase access to the DNA tem...
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Bio 1A03 - Test 2 - T2M2 to T3M2 Study Notes
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This package contains the module and lecture notes for T2M2 to T3M2. This includes photos, explanations, and a point-by-point analysis of all the topics required for test 2. 
Some of the topics covered: 
From genome to proteome 
Positive Regulation of Lac Operon 
The repressor protein 
Anticodon region 
Levels of regulations
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