Lac operon Samenvattingen, Aantekeningen en Examens
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Biology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide
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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 
Expressivity is the type or degree to which a penetrant gene ( the genes carrying the 
mutatio...
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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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Final Exam- Lac Operon With Complete Solutions 2023
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Final Exam- Lac Operon With Complete Solutions 2023
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BIO 1A03 Midterm 2 Questions and Answers Graded A
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BIO 1A03 Midterm 2 Questions and Answers Graded A Prokaryotic growth and cell division -nutrient-rich environment -favorable temperatures 
Housekeeping genes -genes required at all times for normal function -all ways transcribed and translated -allow constant maintance for general cellular activity -e.g. structural protein of a cell, DNA and RNA polymerase, genes coding for ribosomal proteins -constitutive 
Regulated genes genes that can be turned on and off at a needed basis 
Francois Jacob and...
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BIO 13 Practice Test 40 Questions with Verified Answers,100% CORRECT
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BIO 13 Practice Test 40 Questions with Verified Answers 
 
RNA contains the sugar 
a. ribose. 
b. deoxyribose. 
c. glucose. 
d. lactose. - CORRECT ANSWER a. ribose. 
 
Unlike DNA, RNA contains 
a. adenine. 
b. uracil. 
c. phosphate groups. 
d. thymine. - CORRECT ANSWER b. uracil. 
 
Which of the following are found in both DNA and RNA? 
a. ribose, phosphate groups, and adenine 
b. deoxyribose, phosphate groups, and guanine 
c. phosphate groups, guanine, and cytosine 
d. phosphate grou...
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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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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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BIO 214 EXAM 3 Practice EXAM 57 Questions with Verified Answers,100% CORRECT
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BIO 214 EXAM 3 Practice EXAM 57 Questions with Verified Answers 
 
In the lac operon, CAP binding to the CAP site of the promoter ____. 
a. occurs when glucose is present 
b. inhibits RNA polymerase from binding to the promoter 
c. occurs when cAMP is absent 
d. helps the repressor protein bind to the operator 
e. enables RNA polymerase to transcribe the operon's genes - CORRECT ANSWER enables RNA polymerase to transcribe the operon's genes 
 
Gene regulation in both prokaryotes and eukaryotes...
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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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