Holoenzyme - Study guides, Class notes & Summaries
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Portage Learning Chem 210 Module 3 exam Newest | 100% Verified
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Question 1 
3 / 3 pts 
True or False: The amino acids serine and threonine both contain sulfur atoms. 
FALSE 
Question 2 
3 / 3 pts 
True or False: The following secondary structure shown below is an example of a betaturn. 
FALSE 
Question 3 
3 / 3 pts 
True or False. The side chain of phenylalanine is bonded to the backbone nitrogen 
atom. 
FALSE 
Question 4 
3 / 3 pts 
True or False: The name of the molecule that binds to an enzyme is called the 
holoenzyme. 
FALSE 
Question 5 
3 / 3 pts
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CMB2001 Questions and Answer | Latest Update 2024/2025
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What is gene expression? 
 ~~> dsDNA is decoded to ssRNA/proteins by an mRNA intermediate 
using A/U/C/GTPs and RNA polymerase 
Where is the consensus sequence in prokaryotic promoters? 
 ~~> at -10 and -35 upstream of the the transcription start site 
What recognises the consensus sequences in prokaryotes? 
 ~~> the holoenzyme 
What is a holoenzyme? 
 ~~> a closed complex with a core enzyme and sigma factor 70 
What does the holoenzyme do? 
 ~~> causes the dsDNA to open and allo...
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MCBM 1- (6) Enzyme, Kinetics, and Regulation with Complete Questions and Answers 100% Correct
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MCBM 1- (6) Enzyme, Kinetics, and Regulation with Complete Questions and Answers 100% CorrectMCBM 1- (6) Enzyme, Kinetics, and Regulation with Complete Questions and Answers 100% CorrectMCBM 1- (6) Enzyme, Kinetics, and Regulation with Complete Questions and Answers 100% CorrectMCBM 1- (6) Enzyme, Kinetics, and Regulation with Complete Questions and Answers 100% CorrectWhat is kcat? What is a holoenzyme? - ANSWER - Kcat=overall rate of an enzyme, catalytic efficiencies. 
 
Holoenzyme (active) i...
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Exam 2: BIOS 242 / BIOS242 Review (Latest 2024/ 2025 Update) Fundamentals of Microbiology with Lab| Questions and Verified Answers| 100% Correct| Grade A- Chamberlain
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Exam 2: BIOS 242 / BIOS242 Review (Latest 2024/ 2025 Update) Fundamentals of Microbiology with Lab| Questions and Verified Answers| 100% Correct| Grade A- Chamberlain 
 
Q: what are enzymes? 
 
Answer: 
 biological catalysts that increase the rate of a chemical reaction 
 
 
Q: is needed for a reaction to occur 
 
Answer: 
 activation energy 
 
 
Q: true or false: enzymes lower the activation energy 
 
Answer: 
 true 
 
 
Q: enzymes act on reactant molecules known as 
 
Ans...
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MCBM 1- (6) Enzyme, Kinetics, and Regulation questions with complete solutions
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What is kcat? What is a holoenzyme? Correct Answer-Kcat=overall rate of an enzyme, catalytic efficiencies. 
 
Holoenzyme (active) is an inactive apoenzyme with non-protein components. (look at the picture) 
 
Discuss enzyme-substrate specificity. What is the lock and key vs. induced fit model? Correct Answer-Induced fit: enzyme changes after substrate binds to make it fit more perfectly. 
 
Discuss energy implications of enzymes. Does it change the activation energy or free energy of the overal...
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Microbial Metabolism Practice Quiz Bank, Exam 2 Questions With Complete Solutions
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What term refers to all of the chemical reactions taking place in a cell? 
A. Catabolism 
B. Redox reactions 
C. Phosphorylation 
D. Metabolism 
E. Cellular respiration correct answer: D) Metabolism 
 
The breakdown of peptidoglycan to N‐acetylmuramic acid, N‐acetylglucosamine and peptides by a 
microbe is an example of 
A. Anabolism 
B. Catabolism 
C. Phosphorylation 
D. Fermentation correct answer: B) Catabolism 
 
Enzymes are typically 
A. Broken down in reactions that requires energy i...
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BMS 503 Exam 3 Questions with Correct Answers 100% Verified 2024/2025
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BMS 503 Exam 3 Questions with Correct Answers 100% Verified 2024/2025 
What are the 3 major steps of replication, transcription, and translation? - Correct Answer initiation, elongation, termination 
 
Bacterial RNA Polymerase - Correct Answer 5 proteins in the core complex that are holoenzymes; 2 alpha: interacts with regulatory proteins; beta: catalytic activity; beta prime: involved in binding and staying bound to DNA; w: stabilizes the complex 
 
Sigma Factor - Correct Answer controls the bi...
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CMB2001 Questions and Answer | Latest Update 2024/2025
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Eukaryotic promoters have a basal region which can contain a TATA box, 
initiator (Lnr), BRE (TFIIV recognition element) and what other element? 
 ~~> Downstream core promoter (DPE) 
In prokaryotes RNA polymerase requires what co-factor? 
 ~~> 70 sigma factor 
Forms the holoenzyme 
The promoter is formed of two hexameric sequences at what positions? 
 ~~> -35 and -10 
The amount of product transcribed is dependant on how close the promoter 
sequences are to what? 
 ~~> Consensus s...
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BIOD 210 Genetics Exam Module 5
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Briefly explain how the base pairs A-T and C-G bond to each other and why the 
interactions they form are important to DNA unwinding. 
Base pairs form hydrogen bonds to each other. G and C form 3 hydrogen bonds, 
while A and T form 2 hydrogen bonds. These hydrogen bonds are weak 
electrostatic interactions that are able to hold the DNA together but are easily 
broken for the DNA to unwind. 
Why are telomerase inhibitors an attractive prospect for cancer therapies? 
>90% of cancer cells expres...
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BMSC 200 Module 6 || All Correct.
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Intro to Enzymes correct answers - a requirement for life is the ability to efficiently and selectively catalyze chemical reactions 
- most biomolecules are very stable and the uncatalyzed transformations would be too slow to permit life 
- experiments done showed that dead yeast could still convert sugars into alcohol indicated that the reactions of life could be separated from life 
- there was a factor in yeast catalyzing the reaction 
 
vitalism correct answers a belief that originally, bioc...
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