Homework Answers
In many cellular membrane systems, the V-ATPases (vacuolar ATPases) functions as proton pumps. The V1 portion of the V-ATPase which is hydrophilic in nature is a rotary motor that has a central axis DF complex that rotates inside a catalytic A3B3 complex which is hexagonally arranged by using ATP hydrolysis energy.
The tight binding between the A3/B3 complex and DF complex results in the stable ATPase activity of the complex and the synthesis of the ATP. The loose binding between them results in reduced activity of the ATPase.
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Question 13 c. The az/B3 subunits catalyze the synthesis of ATP. Which activity of the A3/B3...
18) Predict the P/O ratio for oxidation of succinate, if ATP synthesis contains 14 c subunits.
18) Predict the P/O ratio for oxidation of succinate, if ATP synthesis contains 14 c subunits.
Question 23 Ribozymes are Cofactors Enzymes. ribosomes which catalyze reactions. protein which catalyze reactions. RNA which...
Question 23 Ribozymes are Cofactors Enzymes. ribosomes which catalyze reactions. protein which catalyze reactions. RNA which catalyze RNA splicing. Question 30 is produced. During the synthesis of acetyl -CoA from pyruvic acid, ATP FADH2 H0 NADH acetic acid
A3. The synthesis of sucrose from glucose and fructose is facilitated through the use of ATP...
A3. The synthesis of sucrose from glucose and fructose is facilitated through the use of ATP as an energy source. The reaction equations for the process, with their Gibbs energy signs, are shown below. glucose + fructose — sucrose ATP + H20 = ADP + Pi AG = Positive AG = Negative glucose + fructose + ATP> sucrose + ADP + Pi Overall AG = Negative Answer A, B, and C. A. The two reactions shown above the line are...
36. Which of the following is true for the ribosomes (rRNA) found in Prokaryotic cells? They are: a) made of DNA and protejn, b) the active site in carbohydrate synthesis, c) subunits that use m...
36. Which of the following is true for the ribosomes (rRNA) found in Prokaryotic cells? They are: a) made of DNA and protejn, b) the active site in carbohydrate synthesis, c) subunits that use mRNA as the directions for primary structure of protein attached to the endoplasmic reticulum, e) used to synthesize DNA by dehydration synthesis. answer the question and give a why the circled answer wasn't correct
36. Which of the following is true for the ribosomes (rRNA) found...
Which of the following is NOT a function of transcription that requires the activity from subunits...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
QUESTION 28 1,3-bisphosphoglycerate is one of the two phosphoryl group donors in the synthesis of ATP...
QUESTION 28 1,3-bisphosphoglycerate is one of the two phosphoryl group donors in the synthesis of ATP during glycolysis, in human erythrocytes, the steady-state concentration of ATP is 2.24 mM ADP IS 0.25 mm, and 3-phosphoglycerate is 0.12 mm. Calculate the concentration of 13. bisphosphoglycerate at 25°C, assuming that the phosphoglycerate kinase reaction) is at equilibrium in the cell. (Standard delta G=-18.9). 5.3E-7M 5.1E-5M 3.4E-6 M QUESTION 30 Why is the glyoxylate cycle critical for the growth and development of young...
DNA, Genes and Protein Synthesis Activity 13: Protein Synthesis is the process by which cells produce (synthesize) proteins. An overview of the process is shown in model 2 (below). Gone 2...
DNA, Genes and Protein Synthesis Activity 13: Protein Synthesis is the process by which cells produce (synthesize) proteins. An overview of the process is shown in model 2 (below). Gone 2 Gene 1 Gene 3 DNA strand3 TRANSLATION Protein Trp Gly Model 2 ACTIVITY and QUESTIONS 1. Based on the information you can gather from model 1 complete the following sentences: a. The nucleotide Adenine (A) always pairs with the nucleotide b. The nucleotide Guanine (G) always pairs with the...
Need help with both questions, thank you! Question 13 The committed step of fatty acid synthesis...
Need help with both questions, thank you!
Question 13 The committed step of fatty acid synthesis is catalyzed by the enzyme acetyl CoA carboxylase. Which of the following accurately describes this enzyme? None of the choices is correct. All of the choices are correct Phosphorylation of the enzyme inhibits its activity. The inhibited enzyme can be stimulated by allosteric regulation of citrate. The dephosphorylated enzyme is active. Question 14 Formation of this molecule is the committed step of fatty acid...
Question 4 1 pts Which of the following correctly describes the Nat/K+-ATPase? O a. The ratio...
Question 4 1 pts Which of the following correctly describes the Nat/K+-ATPase? O a. The ratio of Na+UK+ pumped in one cycle is 1:1. ob. It is electrogenic. O c. The pump is open to the cytosol in the E2 conformation. O d. It pumps faster in the presence of digitalis. Question 5 1 pts Which of the following best describes ATP synthase? O a. A pore for facilitated diffusion. O b. An escalator. c. A rotary motor. O d....
Question 13 (4 points) Which of the following is the best synthesis for 2-bromopropane? Addition of...
Question 13 (4 points) Which of the following is the best synthesis for 2-bromopropane? Addition of HBr to propyne. Addition of HBr to propyne in the presence of peroxides. Bromination of propane using Br2/light. Addition of Br2 in CCl4 to propene. Question 14 (4 points) Which of these is used to make an alcohol into a substrate with a good leaving group? NaNH2 pyridine, then CH3SO2CI NaOH NaBr
18) Predict the P/O ratio for oxidation of succinate, if ATP synthesis contains 14 c subunits.
Question 23 Ribozymes are Cofactors Enzymes. ribosomes which catalyze reactions. protein which catalyze reactions. RNA which catalyze RNA splicing. Question 30 is produced. During the synthesis of acetyl -CoA from pyruvic acid, ATP FADH2 H0 NADH acetic acid
A3. The synthesis of sucrose from glucose and fructose is facilitated through the use of ATP as an energy source. The reaction equations for the process, with their Gibbs energy signs, are shown below. glucose + fructose — sucrose ATP + H20 = ADP + Pi AG = Positive AG = Negative glucose + fructose + ATP> sucrose + ADP + Pi Overall AG = Negative Answer A, B, and C. A. The two reactions shown above the line are...
36. Which of the following is true for the ribosomes (rRNA) found in Prokaryotic cells? They are: a) made of DNA and protejn, b) the active site in carbohydrate synthesis, c) subunits that use mRNA as the directions for primary structure of protein attached to the endoplasmic reticulum, e) used to synthesize DNA by dehydration synthesis. answer the question and give a why the circled answer wasn't correct
36. Which of the following is true for the ribosomes (rRNA) found...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
QUESTION 28 1,3-bisphosphoglycerate is one of the two phosphoryl group donors in the synthesis of ATP during glycolysis, in human erythrocytes, the steady-state concentration of ATP is 2.24 mM ADP IS 0.25 mm, and 3-phosphoglycerate is 0.12 mm. Calculate the concentration of 13. bisphosphoglycerate at 25°C, assuming that the phosphoglycerate kinase reaction) is at equilibrium in the cell. (Standard delta G=-18.9). 5.3E-7M 5.1E-5M 3.4E-6 M QUESTION 30 Why is the glyoxylate cycle critical for the growth and development of young...
DNA, Genes and Protein Synthesis Activity 13: Protein Synthesis is the process by which cells produce (synthesize) proteins. An overview of the process is shown in model 2 (below). Gone 2 Gene 1 Gene 3 DNA strand3 TRANSLATION Protein Trp Gly Model 2 ACTIVITY and QUESTIONS 1. Based on the information you can gather from model 1 complete the following sentences: a. The nucleotide Adenine (A) always pairs with the nucleotide b. The nucleotide Guanine (G) always pairs with the...
Need help with both questions, thank you!
Question 13 The committed step of fatty acid synthesis is catalyzed by the enzyme acetyl CoA carboxylase. Which of the following accurately describes this enzyme? None of the choices is correct. All of the choices are correct Phosphorylation of the enzyme inhibits its activity. The inhibited enzyme can be stimulated by allosteric regulation of citrate. The dephosphorylated enzyme is active. Question 14 Formation of this molecule is the committed step of fatty acid...
Question 4 1 pts Which of the following correctly describes the Nat/K+-ATPase? O a. The ratio of Na+UK+ pumped in one cycle is 1:1. ob. It is electrogenic. O c. The pump is open to the cytosol in the E2 conformation. O d. It pumps faster in the presence of digitalis. Question 5 1 pts Which of the following best describes ATP synthase? O a. A pore for facilitated diffusion. O b. An escalator. c. A rotary motor. O d....
Question 13 (4 points) Which of the following is the best synthesis for 2-bromopropane? Addition of HBr to propyne. Addition of HBr to propyne in the presence of peroxides. Bromination of propane using Br2/light. Addition of Br2 in CCl4 to propene. Question 14 (4 points) Which of these is used to make an alcohol into a substrate with a good leaving group? NaNH2 pyridine, then CH3SO2CI NaOH NaBr
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