Homework Answers
Answer- a) after aeeasonssembly but before disassembly.
Reason- ATP hydrolysis by actin is done after assembly but before disassembly.
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When is ATP hydrolyzed by acting O after assembly but before disassembly after disassembly from the...
When ATP is hydrolyzed: A. water is formed and released as a reaction product. B. the...
When ATP is hydrolyzed: A. water is formed and released as a reaction product. B. the free energy of ATP is captured into a usable form by transferring the terminal phosphate group to the reactant molecule. C. the tow remaining phosphates acquire the energy that had been present in the linkage of three phosphates. D. the energy is directly transferred to the products by an unknown mechanism.
Both actin microfilaments and tubulin microtubules can generation motion by assembly/disassembly. O True O False Question...
Both actin microfilaments and tubulin microtubules can generation motion by assembly/disassembly. O True O False Question 5 (1 point) Both actin microfilaments and tubulin microtubules can generate motion by sliding filaments. O True O False Question 6 (1 point) Both actin microfilaments and tubulin microtubules have functional association with ATPases. True O False
1. When ATP is hydrolyzed in vitro (i.e. in a test tube) to form ADP and...
1. When ATP is hydrolyzed in vitro (i.e. in a test tube) to form ADP and inorganic phosphate, free energy is merely released as heat to the surroundings. In a cell this would be a wasteful use of energy and dangerous rising temperatures would lead to the denaturation of enzymes. How, then, do cells use the hydrolysis of ATP to perform cellular work? A complete response would include the following terms: energy coupling, endergonic/exergonic, phosphate transfer, and phosphorylated intermediate.
Question 46 (2 points) After photosystem II is produced. is produced and after photosystem O ATP;...
Question 46 (2 points) After photosystem II is produced. is produced and after photosystem O ATP; NADPH NADPH; ATP ATP; FADH2 NADPH; FADH2 Rising levels of cylcin increase the levels of OCdks O CAMP o MPF DAG
What happens when ATP synthase operates “in reverse” and pumps H+ across a membrane against its...
What happens when ATP synthase operates “in reverse” and pumps H+ across a membrane against its electrochemical proton gradient? Choose one: ATP is hydrolyzed to form ADP and Pi. ATP is co-transported across the membrane. Nutrients are transported in the opposite direction across the membrane. Na+ is transported in the opposite direction across the membrane. ATP is synthesized from ADP and Pi.
8. Which of the following is not a destination for vesicles leaving the Golgi apparatus? a....
8. Which of the following is not a destination for vesicles leaving the Golgi apparatus? a. The plasma membrane b. The exterior of the cell c. Lysosomes d. Mitochondria 12 9. Proteins that fail to fold properly in the endoplasmic reticulum are removed by a process termed alled 10. Chloroplasts have three membranes: the inner membrane, the outer membranc, and the membrane. t I. Which of the following is not a protein translocon/translocase found in the mitochondrial inner or outer...
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O...
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O citric acid cycle Question 11 (2 points) What would expect to happen in mitochondria that have fewer cristae Increased proton motive force Decreased oxygen usage increased ATP to ADP conversion O No change in mitocondrial funciton Question 12 (2 points) What is one example of when energy molecules/electron carriers are produced during the citric acid cycle? O conversion of succinate to fumarate O addition...
answer only question number 7.please answer only question number 7 Why termination of a cell signaling...
answer
only question number 7.please answer only question number 7
Why termination of a cell signaling event is important? Explain with two examples how GPCR signaling is terminated. What is actin filaments treadmilling? What would be the consequence for actin filament assembly/disassembly if a mutation prevented actin's ability to bind ATP? What would be the consequence if a mutation prevented actin's ability to hydrolyze ATP? Predict the effect on a cell's actin cytoskeleton if function blocking antibody against cofilin was...
30) How many ATP equivalents result from the total transformation of one glucose molecule after it...
30) How many ATP equivalents result from the total transformation of one glucose molecule after it has undergone glycolysis, transformation from pyruvate to Acetyl-CoA, and transformed through the Citric Acid Cycle? A) 2 ATP molecules B) 5 ATP molecules C) 12 ATP molecules D) 20 ATP molecules E) 32 ATP molecules
Voltage-gated Na channels exist in three distinct conformations in axons because Answers A-D A they assume...
Voltage-gated Na channels exist in three distinct conformations in axons because Answers A-D A they assume an inactivated conformation shortly after opening, which ensures that the action potential cannot move backwards toward the cell body. B they change conformation when binding Nat and transporting it to the opposite side of the membrane before releasing it outside the cell. C they respond to ligand binding, mechanical stress, or changes in voltage. D they assume different conformations as ATP is bound and...
Both actin microfilaments and tubulin microtubules can generation motion by assembly/disassembly. O True O False Question 5 (1 point) Both actin microfilaments and tubulin microtubules can generate motion by sliding filaments. O True O False Question 6 (1 point) Both actin microfilaments and tubulin microtubules have functional association with ATPases. True O False
1. When ATP is hydrolyzed in vitro (i.e. in a test tube) to form ADP and inorganic phosphate, free energy is merely released as heat to the surroundings. In a cell this would be a wasteful use of energy and dangerous rising temperatures would lead to the denaturation of enzymes. How, then, do cells use the hydrolysis of ATP to perform cellular work? A complete response would include the following terms: energy coupling, endergonic/exergonic, phosphate transfer, and phosphorylated intermediate.
Question 46 (2 points) After photosystem II is produced. is produced and after photosystem O ATP; NADPH NADPH; ATP ATP; FADH2 NADPH; FADH2 Rising levels of cylcin increase the levels of OCdks O CAMP o MPF DAG
8. Which of the following is not a destination for vesicles leaving the Golgi apparatus? a. The plasma membrane b. The exterior of the cell c. Lysosomes d. Mitochondria 12 9. Proteins that fail to fold properly in the endoplasmic reticulum are removed by a process termed alled 10. Chloroplasts have three membranes: the inner membrane, the outer membranc, and the membrane. t I. Which of the following is not a protein translocon/translocase found in the mitochondrial inner or outer...
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O citric acid cycle Question 11 (2 points) What would expect to happen in mitochondria that have fewer cristae Increased proton motive force Decreased oxygen usage increased ATP to ADP conversion O No change in mitocondrial funciton Question 12 (2 points) What is one example of when energy molecules/electron carriers are produced during the citric acid cycle? O conversion of succinate to fumarate O addition...
answer
only question number 7.please answer only question number 7
Why termination of a cell signaling event is important? Explain with two examples how GPCR signaling is terminated. What is actin filaments treadmilling? What would be the consequence for actin filament assembly/disassembly if a mutation prevented actin's ability to bind ATP? What would be the consequence if a mutation prevented actin's ability to hydrolyze ATP? Predict the effect on a cell's actin cytoskeleton if function blocking antibody against cofilin was...
30) How many ATP equivalents result from the total transformation of one glucose molecule after it has undergone glycolysis, transformation from pyruvate to Acetyl-CoA, and transformed through the Citric Acid Cycle? A) 2 ATP molecules B) 5 ATP molecules C) 12 ATP molecules D) 20 ATP molecules E) 32 ATP molecules
Voltage-gated Na channels exist in three distinct conformations in axons because Answers A-D A they assume an inactivated conformation shortly after opening, which ensures that the action potential cannot move backwards toward the cell body. B they change conformation when binding Nat and transporting it to the opposite side of the membrane before releasing it outside the cell. C they respond to ligand binding, mechanical stress, or changes in voltage. D they assume different conformations as ATP is bound and...
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