Which molecule is hydrolyzed by myosin to provide the energy for a conformational change in the myosin structure in mus...
Homework Answers
Muscle contraction is basically observed by actin filaments pulled by myosin molecules.The hydrolysis of ATP induces conformational change in myosin. It involves a number of conformational changes in myosin.
Option B 'ATP' is the correct option.
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Which molecule is hydrolyzed by myosin to provide the energy for a conformational change in the myosin structure in mus...
b) Which of the following are true statements about myosin? Select all the true statements. Each...
b) Which of the following are true statements about myosin? Select all the true statements. Each myosin head has a binding site for actin and ATP The interaction between myosin and actin converts chemical energy to mechanicall work muscle contraction, thick and thin filaments slide past each other causing an overall lengthening of the muscle. In a muscle cell, myosin tails group together to form a thick filament The myosin-actin reaction cycle is powered by ATP hydrolysis The tail of...
20. In which of the following configurations is the myosin filament in a high energy state?...
20. In which of the following configurations is the myosin filament in a high energy state? a. when the myosin fibril is bound to ATP b. when the myosin filament is bound to ADP and inorganic phosphate c. when the myosin filament is bound to the actin filament immediately after the power stroke d. when the head of the myosin filament is not bound to anything e. none of the above
5. (4pts) A. Referring to the cross-bridge cycle in muscle contraction, please match the following changes...
5. (4pts) A. Referring to the cross-bridge cycle in muscle contraction, please match the following changes in myosin binding state to events in the ATP hydrolysis and exchange cycle: Myosin conformation and actin-binding state The myosin motor moves towards the plus end (energized") and binds weakly to actin. Power stroke - Myosin binds tightly to actin, moves to a "rigor" position, & pulls actin. Myosin releases from actin. ATP hydrolysis cycle in myosin a. ATP becomes bound b. ATP hydrolyzes...
(15). Muscle cells contain , which are composed of thin filaments made of ts made ofarranged...
(15). Muscle cells contain , which are composed of thin filaments made of ts made ofarranged as thousands of . Myosin is a motor protein that moves towards the WWwe end of actin. and eNN Calcium is stored in specialized endoplasmic reticulum called released in response to depolarization of the . Calcium binds to MMMN , uncovering the myosin binding which results in a conformational change in sites on actin. Binding of ATP to myosin causes the hydrolysis of ATP...
Since AMP can also be hydrolyzed to release energy, why do cells bother to use ATP...
Since AMP can also be hydrolyzed to release energy, why do cells bother to use ATP (which requires the cell to have more phosphate) to power cellular reactions? Question 1 options: a. ATP fits better into enzymes. b. ATP hydrolysis releases more energy than AMP hydrolysis. c. ATP stores for a longer time than AMP. d. Cells have more than enough phosphate, and it serves few roles anyway.
Living organisms use energy from the metabolism of food to create an energy rich molecule called...
Living organisms use energy from the metabolism of food to create an energy rich molecule called adenosine triphoshpate (ATP). the ATP then acrs as and energy source for a variegty of reactions that the living organism must carry oyut to survive. ATP provides energy through its hydrolysis, which can be symbolized as follows: ATP(aq)+H2O(l) --> ADP(aq)+Pi(aq) with a delta G of the reaction being =-30.5 kj. Where ADP represents adenosine diphosphate and Pi represents in inorganic phosphate group (such as...
How do most motor proteins ensure their movements are unidirectional? O Choose one: O A. They...
How do most motor proteins ensure their movements are unidirectional? O Choose one: O A. They couple a conformational change to the formation of an ATP molecule from ADP and Pi. O B. Their asymmetrical structures support movement in only one direction. O C. They couple a conformational change to a thermodynamically unfavorable reaction. O D. They couple a conformational change to the hydrolysis of an ATP molecule. O E. They hydrolyze their bound GTP, effectively preventing movement in the...
Figure 1.1 shows a molecule of ATP. ATP is the universal energy currency which provides the...
Figure 1.1 shows a molecule of ATP. ATP is the
universal energy currency which provides the immediate source of
energy for cellular processes.
When ATP is broken
down into ADP and Pi, 30.6 kJ mol-1 of energy is
released, which can be used for cellular activities.
Figure 1.1
State the name of the part of the ATP molecule labelled
X. [1]
State the name of the part of the ATP molecule labelled
Y. [1]
State the name of the part...
1.During skeletal muscle contraction, the following occurs except A)ATP hydrolysis directly causes the movement of the...
1.During skeletal muscle contraction, the following occurs except A)ATP hydrolysis directly causes the movement of the myosin head to cause a power stroke B)When the myosin head releases a phosphate, it can bind actin C)When a new ATP binds to a myosin head, it releases actin D)ATP hydrolysis activates the myosin head so it can bind actin E)When the myosin head binding actin releases ADP, it moves to create the power stroke 2.During skeletal muscle contraction, the length of the...
Part B Which part of the adenosine triphosphate molecule is released when it is hydrolyzed to...
Part B Which part of the adenosine triphosphate molecule is released when it is hydrolyzed to give energy for biological reactions? Adesine NH, a-phosphate pphosphate T-phosphate Adenine CH-0-P 0-F Re HH OH OH Adenane tripphe ATP
b) Which of the following are true statements about myosin? Select all the true statements. Each myosin head has a binding site for actin and ATP The interaction between myosin and actin converts chemical energy to mechanicall work muscle contraction, thick and thin filaments slide past each other causing an overall lengthening of the muscle. In a muscle cell, myosin tails group together to form a thick filament The myosin-actin reaction cycle is powered by ATP hydrolysis The tail of...
5. (4pts) A. Referring to the cross-bridge cycle in muscle contraction, please match the following changes in myosin binding state to events in the ATP hydrolysis and exchange cycle: Myosin conformation and actin-binding state The myosin motor moves towards the plus end (energized") and binds weakly to actin. Power stroke - Myosin binds tightly to actin, moves to a "rigor" position, & pulls actin. Myosin releases from actin. ATP hydrolysis cycle in myosin a. ATP becomes bound b. ATP hydrolyzes...
(15). Muscle cells contain , which are composed of thin filaments made of ts made ofarranged as thousands of . Myosin is a motor protein that moves towards the WWwe end of actin. and eNN Calcium is stored in specialized endoplasmic reticulum called released in response to depolarization of the . Calcium binds to MMMN , uncovering the myosin binding which results in a conformational change in sites on actin. Binding of ATP to myosin causes the hydrolysis of ATP...
How do most motor proteins ensure their movements are unidirectional? O Choose one: O A. They couple a conformational change to the formation of an ATP molecule from ADP and Pi. O B. Their asymmetrical structures support movement in only one direction. O C. They couple a conformational change to a thermodynamically unfavorable reaction. O D. They couple a conformational change to the hydrolysis of an ATP molecule. O E. They hydrolyze their bound GTP, effectively preventing movement in the...
Figure 1.1 shows a molecule of ATP. ATP is the
universal energy currency which provides the immediate source of
energy for cellular processes.
When ATP is broken
down into ADP and Pi, 30.6 kJ mol-1 of energy is
released, which can be used for cellular activities.
Figure 1.1
State the name of the part of the ATP molecule labelled
X. [1]
State the name of the part of the ATP molecule labelled
Y. [1]
State the name of the part...
Part B Which part of the adenosine triphosphate molecule is released when it is hydrolyzed to give energy for biological reactions? Adesine NH, a-phosphate pphosphate T-phosphate Adenine CH-0-P 0-F Re HH OH OH Adenane tripphe ATP
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