Trp operon Study guides, Class notes & Summaries
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Biology 2100 Final Exam Study Guide 2022 with complete solution 
 
operon 
a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway 
genes of an operon 
arranged sequentially after the promoter 
promoter 
a specific nucleotide sequence in DNA that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place 
regulatory gene 
codes for a protein, such as a repressor, that controls the ...
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Biology Exam 4 Practice Test 41 Questions with Verified Answers,100% CORRECT
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Biology Exam 4 Practice Test 41 Questions with Verified Answers 
 
For this pair of items, choose the option that best describes their relationship. 
 
(A) The probability that amino acids with polar side chains are hydrophobic. 
 
(B) The probability that amino acids with side chains containing an -OH group are 
 
hydrophilic. 
 
A) Item (A) is greater than item (B). 
 
B) Item (A) is less than item (B). 
 
C) Item (A) is exactly or very approximately equal to item (B). 
 
D) Item (A) may stand...
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Biology 2100 Final Exam Study Guide 2022 with complete solution
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Biology 2100 Final Exam Study Guide 2022 with complete solution 
 
operon 
a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway 
genes of an operon 
arranged sequentially after the promoter 
promoter 
a specific nucleotide sequence in DNA that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place 
regulatory gene 
codes for a protein, such as a repressor, that controls the ...
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Microbiology Exam 2 practice Tests 208 Questions with Verified Answers,100% CORRECT
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Microbiology Exam 2 practice Tests 208 Questions with Verified Answers 
 
Which of the following statements is correct? 
A) For every amino acid, there is one codon. 
B) A codon may signify more than one amino acid. 
C) For every codon, there is one amino acid. 
D) All of these are correct. - CORRECT ANSWER For every Codon, there is one amino acid 
 
The sigma factor of RNA polymerase is necessary for 
A) maximum transcription of the gene. 
B) termination of the mRNA chain. 
C) elongation...
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2024 TESTBANK NURSING GENETICS Multiple Choice QUESTIONS WITH 100% VERIFIED SOLUTIONS
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1) A protein is 300 amino acids long. Which of the following could be the number of nucleotides in 
the section of DNA that codes for this protein? (Remember: DNA is double-stranded.) 
E) 1800 
2) A short segment of an mRNA molecule is shown below. The polypeptide it codes for is also 
shown: 
5′-AUGGUGCUGAAG : methionine-valine-leucine-lysine 
Assume that a mutation in the DNA occurs so that the fourth base (counting from the 5′ end) of the 
messenger RNA now reads A rather than G. What seq...
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TAMU BIO 111 RAO FINAL EXAM QUESTIONS AND ANSWERS 2024.
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replications 
- make DNA from DNA template 
- DNA Polymerase adds DNA nucleotides to free 3' end 
- Occurs in nucleus for eukaryotes 
 
 
 
leading strand 
- synthesized continuously 
- initially needs an RNA Primer 
 
 
 
 
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lagging strand 
- synthesized in short sections called Okasaki Fragments (5' RNA and 3' DNA) 
- Problems (due to lack of free 3' end) 
1. Primase ...
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Karp Cell & Molecular Bio Chapter 12 Exam Questions And Answers(A+ GUARANTEED)
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operon - ANSWER- A functional complex of genes encoding enzymes shared by a 
metabolic pathway. 
structural genes - ANSWER- code for the enzymes and are translated from a single 
polycistronic mRNA (encodes for more than one protein). 
promoter - ANSWER- Binding site for RNA polymerase -->transcription. 
operator - ANSWER- Binding site next to promoter where regulatory proteins bind 
repressor protein - ANSWER- binds a specific DNA sequence and determines whether 
or not a particular gene is ...
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PMG EXAM 2 Complete Questions & Answers
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The lac operon is expressed when - ANSWER glucose is low and lactose is absent 
 
When in a complex with ________, the CAP protein binds to the CAP site and ________ the expression of the lac operon. - ANSWER cAMP ; switches on 
 
In the absence of lactose, the lac repressor is - ANSWER active and can bind to the operator 
 
The inducer of the lac operon is an isomer of lactose. - ANSWER True 
 
When RNA polymerase is bound to the lac promoter sequence, transcription of the lac operon is on - AN...
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Genetics Exam 2 practice exam 107 Questions with Verified Answers,100% CORRECT
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Genetics Exam 2 practice exam 107 Questions with Verified Answers 
 
In five Hfr strains, each of which was used to build a time-of-entry map, the genes entered the recipient cells as follows: 
Strain 1: S L A C T F 
Strain 2: N P F T C A 
Strain 3: T F P N U Y 
Strain 4: S H Y U N P 
Strain 5: U N P F T C 
Which of the following represents a correct compilation of these results? 
A) S L A C T F P N H C U 
B) N P F T S L A C H U T 
C) T C A L S P N U Y H 
D) U N P F T C A L S T F 
E) S L A C T F...
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UNT Biology 1710 Practice Exam 3|52 Questions with Verified Answers,100% CORRECT
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UNT Biology 1710 Practice Exam 3|52 Questions with Verified Answers 
 
An excellent example of the genetic phenomenon known as continuous variation would be: 
a. flower color in plants. 
b. height in humans. 
c. human blood groups. 
d. epistasis. 
e. fur color in arctic animals - CORRECT ANSWER B) height in humans 
 
A human genetic trait passed from one generation to the next has an unusual inheritance pattern. The genotype and phenotype of the offspring depends only upon the genotype of the mo...
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