Operons Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about Operons? On this page you'll find 148 study documents about Operons.
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Regulation of nitrogen fixation exam questions and answers
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Regulation of nitrogen fixation exam 
questions and answers 
nif cluster - Answer- a genetically linked and coordinately regulated group of operons 
encoding genes required for nitrogen fixation 
What is the EBP for nif genes? - Answer- NifA 
How does the activity of NifA differ from that of NtrC? - Answer- The unmodified form of 
NifA is active 
NtrC needs to be phosphorylated to be active 
Under what 2 conditions does nif transcription occur? - Answer- 1) Only in the absence 
of a fixed nitrog...
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Primavera Biology B Unit 2: DNA and the Genetic Code 100% Correct
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Primavera Biology B Unit 2: DNA and the Genetic Code 100% Correct 
CHECKPOINT 07 
Which correctly describe a part of the DNA molecule and what the part is made of? Select all that apply. rungs—bases 
backbone—a phosphate group and a sugar 
A scientist is trying to determine if a nucleic acid is RNA. What features should the molecule have? Select all that apply. a single strand 
the sugar ribose 
Why is DNA antiparallel? Its double strands run in opposite directions. 
Which of the following ...
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Biology Chapter 18 Practice Test 44 Questions with Verified Answers,100% CORRECT
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Biology Chapter 18 Practice Test 44 Questions with Verified Answers 
 
In the case of E. coli, the bacterium may need to synthesize tryptophan, or its host, a human, may supply all the tryptophan it needs. Why do both bacteria and humans need tryptophan? 
A) It is an important enzyme in the glycolysis pathway. 
B) It is one of the 20 amino acids used by all organisms to synthesize proteins. 
C) It is an important constituent of cell walls in both humans and bacteria. 
D) Tryptophan induces the ...
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BIO 1232 - SEMI FINAL PART A AND B QUESTIONS AND ANSWERS 100% CORRECT.
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BIO 1232 - SEMI FINAL PART A AND B QUESTIONS AND ANSWERS 100% CORRECT. 
Cell Biology 
1. Which of the following is the most important type of force used to stabilize secondary 
structure in proteins? 
a) Ionic bonds 
b) Hydrogen bonds 
c) Aromatic-aromatic ring interactions 
d) Hydrophobic Interactions 
e) Peptide bonds 
2. Which of the following is NOT true of allosterically regulated enzymes? 
a) they follow Michaelis-Menten kinetics 
b) they demonstrate cooperativity 
c) their activity can b...
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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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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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BIO 111 TAMU Fletcher Exam 3 Already Graded A
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BIO 111 TAMU Fletcher Exam 3 Already Graded A Friedrich Miescher discovered DNA in 1869 But did not know (Isolated phosphate) rich acidic compounds 
Frederick Griffith Discovered transformation during an experiment that involved injecting mice with smooth S cells, rough R cells, heat-killed S cells, and heat-killed S cells with living R cells. 
Avery, MacLeod, McCarty Identified the heritable substance as DNA Used test tubes- vitro 
Hershey and Chase performed experiments showing that DNA is the...
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BIO 1232 - SEMI FINAL PART A AND B QUESTIONS AND ANSWERS 100% CORRECT.
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BIO 1232 - SEMI FINAL PART A AND B QUESTIONS AND ANSWERS 100% CORRECT. 
Cell Biology 
1. Which of the following is the most important type of force used to stabilize secondary 
structure in proteins? 
a) Ionic bonds 
b) Hydrogen bonds 
c) Aromatic-aromatic ring interactions 
d) Hydrophobic Interactions 
e) Peptide bonds 
2. Which of the following is NOT true of allosterically regulated enzymes? 
a) they follow Michaelis-Menten kinetics 
b) they demonstrate cooperativity 
c) their activity can b...
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MIBO 3500 Exam 3 Scott UGA Questions With Verified Solutions | Latest Updates With Rationales
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MIBO 3500 Exam 3 Scott UGA 
Questions With Verified Solutions | 
Latest Updates With Rationales 
Archaeal phylogeny - ANSWER Difficult to culter & PCR 
Genomes are recombinogenic 
classifications are frequently under revision 
Archaeal Cell Wall does not have peptidoglycan but has - 
ANSWER pseudopeptidogylcan 
The archaea Cell wall stains - ANSWER gram positive or 
negative 
the archaeal cell wall has NAG and no NAM but - ANSWER NAcetyltasamunyronic acid 
T/F the archaeal cell wall is NOT ...
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Regulation of nitrogen fixation exam questions and answers
- Exam (elaborations) • 4 pages • 2024
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- $10.49
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Regulation of nitrogen fixation exam 
questions and answers 
nif cluster - Answer- a genetically linked and coordinately regulated group of operons 
encoding genes required for nitrogen fixation 
What is the EBP for nif genes? - Answer- NifA 
How does the activity of NifA differ from that of NtrC? - Answer- The unmodified form of 
NifA is active 
NtrC needs to be phosphorylated to be active 
Under what 2 conditions does nif transcription occur? - Answer- 1) Only in the absence 
of a fixed nitrog...