Question

Does the energy associated with the mechanical work performed by a contracting muscle fiber (cell)derive from...

Does the energy associated with the mechanical work performed by a contracting muscle fiber (cell)derive from the stored potential energy of ionic gradients, or from some other source? Please explain.

Homework Answers

Answer #1

Answer:

  • The contraction of muscle fiber is triggered by a neuronal impulse. Mitochondria are involved in processes that supplies energy required for the work performed during the contraction of the muscle fibe (cell) and is derived from Adenosine Triphosphate (ATP).
  • Hydrolysis of ATP releases ADP, inorganic phosphate and energy. Reactions of aerobic cellular respiration occurs in Mitochondria and requires presence of oxygen to break down food ( stored reserves of glycogen, blood glucose, atty acids etc) thereby generating ATP that is used for contraction of muscles.
  • Creatine phosphate (CP) and muscle glycogen are also used to generate muscle ATP, when the levels of ATP in muscles fiber (cells) depletes.
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
How does the action potential quickly get from the outside of the muscle fiber to the...
How does the action potential quickly get from the outside of the muscle fiber to the inside of the cell?
How does the action potential quickly get from the outside of the muscle fiber to the...
How does the action potential quickly get from the outside of the muscle fiber to the inside of the cell?
Show in detail how the statement of conservation of mechanical energy derives from the work energy...
Show in detail how the statement of conservation of mechanical energy derives from the work energy theorem and the definition of a potential function. (asking for summrized clear answer)
We can derive the potential energy stored in an ideal spring when it is stretched or...
We can derive the potential energy stored in an ideal spring when it is stretched or compressed by computing the work done due to Hooke’s law. In this experiment we will be working with springs. When they are not being stretched by some external force, the coils of these springs are held tightly together by the spring’s rigidity. They are held so tightly that a small amount of weight can be hung from these springs, and they don’t stretch at...
1. A muscle cell has a membrane potential that is similar to the action potential. When...
1. A muscle cell has a membrane potential that is similar to the action potential. When the membrane potential reverses the muscle fiber contracts, As in a neuron this is an all-or- none event. If this is all-or- none how are we able to make movements of various sizes? 2. Compare the restoration theory of sleep and the evolution theory. Give an example of the evidence for each 3. Compare the set point concept with the settling point concept. 4....
12. a. You do 31 J of work to move a -15 uC from infinity to...
12. a. You do 31 J of work to move a -15 uC from infinity to a spot some distance away from a -11 uC charge. What is that distance? [4.8 cm] b. The work you did is stored as potential energy in the system as long as the charges are both held fixed in that position. You then let the -15 uC charge go. If that point charge has a mass of 7.2x10-12 kg, how fast will it be...
21.) The cell needs energy to fuel endergonic reactions. Where does that energy come from? a....
21.) The cell needs energy to fuel endergonic reactions. Where does that energy come from? a. ATP hydrolysis b. Breakdown of glucose c. anabolism d. catabolism e. A, B, D 22.) The polarity of water drives which of the following? a. hydrogen bonding b. protein folding c. hydrophobic effect d. B and C e. A, B, and C 23.) The primary role of oxygen in cellular respiration is to _____. a. yield energy in the form of ATP as it...
Learning Goal: To understand how to apply the law of conservation of energy to situations with...
Learning Goal: To understand how to apply the law of conservation of energy to situations with and without nonconservative forces acting. The law of conservation of energy states the following: In an isolated system the total energy remains constant. If the objects within the system interact through gravitational and elastic forces only, then the total mechanical energy is conserved. The mechanical energy of a system is defined as the sum of kinetic energy K and potential energy U. For such...
Consider the energy we use everyday in routine tasks, where that energy comes from, and where...
Consider the energy we use everyday in routine tasks, where that energy comes from, and where it goes. When you climb stairs you overcome the force of gravity to raise yourself to some height. It does not matter what the slope of the stairs are; the work done is against gravity which is always vertical so only the height counts. Take a typical human mass of 65 kg (roughly 143 lb of gravitational pull or weight) and a stairway up...
1)To lower the energy barrier in a reaction, enzymes change the path of the reaction between...
1)To lower the energy barrier in a reaction, enzymes change the path of the reaction between the reactants and products by doing what? A. Destabilizing the transition state by increasing the free energy to be used and lowering the activation energy B. Releasing carbonic acid into the environment to stabilize the transition state and lowering the activation energy C. Reduce the activation energy by stabilizing the transition state and decreasing its free energy D.Supply heat to stabilize the reactants and...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT