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(ii) The roles that the two divalent magnesium ions coordinated in the active site of the...
8. Bacterial and eukaryotic mRNA polymerases two ions that coordinate two residues in the protein active...
8. Bacterial and eukaryotic mRNA polymerases two ions that coordinate two residues in the protein active site. (2 pts) 9. Class I and Il aminoacyltRNA synthetases both use a intermediate Class synthetases attach this intermediate to the 2' OH of a(n) _ synthetases attach this intermediate to the the tRNA 3' end, while Class 3' OH on the 3' end of a tRNA. (4 pts) 10. Group Il intron mechanism, a the - of a(n) residue within the intron serves...
5. A protonated histidine residue in the active site of aspartate transcarbamoylase, ATCase, is thought to...
5. A protonated histidine residue in the active site of aspartate transcarbamoylase, ATCase, is thought to be important in stabilizing the transition state of the bound substrate. a) Sketch a graph showing the pH dependence of the catalytic rate, assuming that this interaction is essential and dominates the pH-activity profile of the enzyme. Provide the biochemical basis for your graph. b) Identify one of the two substrates involved in the reaction catalyzed by ATCase and the enzyme class for ATCase....
Can anyone make the main points of this and explain some about them? Thank you Bioinformatic...
Can anyone make the main points of this and explain some about
them? Thank you
Bioinformatic and biochemical analyses demonstrate that pistol RNAs are members of a novel class of self-cleaving ri- bozymes. Both natural sequence variation and the results of mutational analyses support the secondary structure model, including a proposed pseudoknot formed by nucleotides in the loop of P1 and the junction between P2 and P3. This ar- chitecture, in addition to the array of 10 highly conserved nu-...
1. In allosteric enzyme inhibition, the active site is blocked by another molecule a. True b....
1. In allosteric enzyme inhibition, the active site is blocked by another molecule a. True b. False 2. In the second-messenger system of hormonal action, a. The presence of a small amount of one hormone (the second messenger) is essential to permit another hormone (the first messenger) to exert its full effect. b. A tropic hormone (the first messenger) stimulates secretion of another hormone (the second messenger). c. The hormone first binds to a specific surface receptor (the first messenger),...
1. The clamp loader loads the sliding clamp onto the DNA. Review the steps listed below....
1. The clamp loader loads the sliding clamp onto the DNA. Review the steps listed below. Which step would come SECOND? a) ATP binds to the y (gamma) subunits, which undergo a conformation change. b) Double-stranded DNA passes through the ß clamp. c) They (gamma) — p clamp —ATP complex binds primed DNA. d) Y (gamma) subunits bind to and open the clamp. e) Single-stranded DNA passes through the side of the ß clamp loader gap. 2. Which of the...
The macromolecular complex that associates with each intron and splices it is called a(n). splicer acrosome...
The macromolecular complex that associates with each intron and splices it is called a(n). splicer acrosome splice engine spliceosome splicing body Transcription in prokaryotes: 1. Requires consensus nucleotide sequences at position -35 and -10 in the promoter region of gene sequence. 2. Requires different sigma factors depending on the environmental stimulus. 3. Can produce a cDNA. All are correct. 3 1 Both 1 and 2 are correct. Which of the following statements about transcription factor TFIIH are correct: Two of...
29. Which of the following would be synthesized in and processed by the smooth endoplasmic reticulum...
29. Which of the following would be synthesized in and processed by the smooth endoplasmic reticulum and Golgi apparatus? A. lipids and steroids B. DNA polymerase and RNA polymerase C. lysosomal enzymes D. cytoskeletal proteins 30. Which of the following are processed in the Golgi apparatus? A. integral membrane proteins of the plasma membrane B. proteins that are secreted from the cell C. proteins that will be broken down by lysosomes D. all of the above E. none of the...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
8. Bacterial and eukaryotic mRNA polymerases two ions that coordinate two residues in the protein active site. (2 pts) 9. Class I and Il aminoacyltRNA synthetases both use a intermediate Class synthetases attach this intermediate to the 2' OH of a(n) _ synthetases attach this intermediate to the the tRNA 3' end, while Class 3' OH on the 3' end of a tRNA. (4 pts) 10. Group Il intron mechanism, a the - of a(n) residue within the intron serves...
5. A protonated histidine residue in the active site of aspartate transcarbamoylase, ATCase, is thought to be important in stabilizing the transition state of the bound substrate. a) Sketch a graph showing the pH dependence of the catalytic rate, assuming that this interaction is essential and dominates the pH-activity profile of the enzyme. Provide the biochemical basis for your graph. b) Identify one of the two substrates involved in the reaction catalyzed by ATCase and the enzyme class for ATCase....
Can anyone make the main points of this and explain some about
them? Thank you
Bioinformatic and biochemical analyses demonstrate that pistol RNAs are members of a novel class of self-cleaving ri- bozymes. Both natural sequence variation and the results of mutational analyses support the secondary structure model, including a proposed pseudoknot formed by nucleotides in the loop of P1 and the junction between P2 and P3. This ar- chitecture, in addition to the array of 10 highly conserved nu-...
The macromolecular complex that associates with each intron and splices it is called a(n). splicer acrosome splice engine spliceosome splicing body Transcription in prokaryotes: 1. Requires consensus nucleotide sequences at position -35 and -10 in the promoter region of gene sequence. 2. Requires different sigma factors depending on the environmental stimulus. 3. Can produce a cDNA. All are correct. 3 1 Both 1 and 2 are correct. Which of the following statements about transcription factor TFIIH are correct: Two of...
29. Which of the following would be synthesized in and processed by the smooth endoplasmic reticulum and Golgi apparatus? A. lipids and steroids B. DNA polymerase and RNA polymerase C. lysosomal enzymes D. cytoskeletal proteins 30. Which of the following are processed in the Golgi apparatus? A. integral membrane proteins of the plasma membrane B. proteins that are secreted from the cell C. proteins that will be broken down by lysosomes D. all of the above E. none of the...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
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