Operon Study guides, Study notes & Summaries
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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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Ultimate AP Biology Exam Review Questions with Verified Answers
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Ultimate AP Biology Exam Review 
Questions with Verified Answers 
 
Compare and contrast transpiration and translocation. What is the difference between xylem and 
phloem? Tranpspiration is the loss of water vapor from the surgace of a plant through the 
stomata. Translocation is the channeling of the sugar through the phloem. 
 
Define hypoosmotic, hyperosmotic, and isomotic 1. Has a lower concentration of solutes 
than its surrounding enviorment 
2. Has a higher concentration of solutes than i...
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Biology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide Questions With Answers.
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Biology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide Questions With Answers. Explain the concepts of penetrance and expressivity 
Penetrance is the percentage of cases in which a certain phenotype is expressed. There 
are two types: 
i. Complete Penetrance: when 100% is correlated to the genotype. So, all express 
the same thing. 
ii. Incomplete: this is when some are identical, and others are different. 
Penetrance= # with genotype showing phenotype x 100 
# wit...
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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...
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Test Bank and Instructor Manual For Applied Behavior Analysis Third Edition John O. Cooper Timothy E. Heron William L. Heward
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Test Bank and Instructor Manual For Applied Behavior Analysis Third Edition John O. Cooper Timothy E. Heron William L. Heward
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GCU BIO 181 FINAL EXAM (EXAM 4) questions n answers
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GCU BIO 181 FINAL EXAM (EXAM 4)The tryptophan operon is a repressible operon that is: - correct answer Turned off whenever tryptophan is added to the growth medium. 
 
The lactose operon is likely to be transcribed when: - correct answer The cyclic AMP and lactose levels are both high within the cell. 
 
For a repressible operon to be transcribed, which of the following must occur? - correct answer RNA polymerase must bind to the promoter, and the repressor must be inactive. 
 
Which of the foll...
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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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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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BIOL 2117 Exam 3 Questions and Answers
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What types of enzymes are typically constitutively expressed? 
Ans- enzymes in constant demand 
In an experiment exploring the expression of DNA repair enzymes, phage 
exposed to UV light had low infectivity, but when both phage and host cell E. 
coli were exposed to UV light, normal levels of infectivity resulted. From these 
data we can infer 
Ans- host cell genes were used to repair phage DNA 
The lacZ gene was used in an experiment testing for the expression of gene X. 
About half the re...
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iology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide
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iology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide. Explain the concepts of penetrance and expressivity 
Penetrance is the percentage of cases in which a certain phenotype is expressed. There 
are two types: 
i. Complete Penetrance: when 100% is correlated to the genotype. So, all express 
the same thing. 
ii. Incomplete: this is when some are identical, and others are different. 
Penetrance= # with genotype showing phenotype x 100 
# with the genotype 
Expressi...
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