Question

64.Sources of ATP in muscles. Role of creatine phosphate. Tetany.

64.Sources of ATP in muscles. Role of creatine phosphate. Tetany.

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The ATP sources in muscles are-

  • creatine phosphate
  • The glycolysis-lactic acid system
  • oxidative phosphorylation (cellular respiration).

Role of creatine phosphate-

Creatine phosphate is one of the sources of ATP in muscles. The energy is stored in the phosphate bonds of the creatine phosphate. The energy of the extra ATP is transferred to creatine to produce creatine phosphate and ADP. More ATP can be quickly created at the time of requirement from this energy reserve.

Tetany-

Tetanization and wave summation (frequency summation) are the result of the stimulation of a muscle cell before its relaxation from the previous stimulus. The relaxation and contraction phases are longer than the refractory period. This results in the contractions to stack on one another generating a wave pattern. The sustained contractions are known as tetany if the frequency of the stimuli is high.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Creatine + ATP -------> Creatine phosphate + ADP The above equation has a standard free energy...
Creatine + ATP -------> Creatine phosphate + ADP The above equation has a standard free energy (∆G˚') of 12.6kJ/mol. Calculate the approximate ratio of Creatine to Creatine Phosphate, when the ATP to ADP ratio is 10:1. Assume standard biochemical conditions of pH 7.0 and temperature of 25˚C
1) Creatine phosphate is produced by creatine kinase which transfers a phosphate group from ATP to...
1) Creatine phosphate is produced by creatine kinase which transfers a phosphate group from ATP to creatine to generate ADP and creatine phosphate. Calculate the ΔG°’ for the coupled reaction. (I calculated it to be -12.5 kJ/mol but I am not sure if this is right) 2) Calculate the ΔG for the reaction described above. The concentrations of creatine phosphate, creatine and ADP are 0.020 mM and the concentrations of the orthophosphate ion and ATP are 20 mM. Temperature is...
To answer this question, please reference the Problem Solving Video: Free Energy, ATP, and Creatine in...
To answer this question, please reference the Problem Solving Video: Free Energy, ATP, and Creatine in Resting Muscles. Suppose a sprinter's muscle tissue contains creatine phosphate at a concentration of 120 mM after dietary supplementation. The sprinter's muscle tissue also contains 4 mM ATP, 0.013 mM ADP, and 13 mM creatine. Use the table of the standard free energies of hydrolysis of phosphorylated compounds and the given concentrations to calculate the free energy change, ΔG, of the creatine kinase reaction...
Imagine that inside a cell the [creatine phosphate] = 3.5 mM, [creatine] = 0.6 mM, and...
Imagine that inside a cell the [creatine phosphate] = 3.5 mM, [creatine] = 0.6 mM, and [Pi] = 4.3 mM. Furthermore, imagine that the pH inside the cell is 7.4. Given that ΔG°′ for creatine phosphate hydrolysis is -10.3 kcal/mol, what is the ΔG for creatine phosphate hydrolysis inside the above-described cell, which is at 37 °C? Report your answer in kcal/mol to the nearest tenths. Hint: you might wish to consult the chapter in our text that discusses thermodynamics.
Imagine that inside a cell the [creatine phosphate] = 3.5 mM, [creatine] = 0.6 mM, and...
Imagine that inside a cell the [creatine phosphate] = 3.5 mM, [creatine] = 0.6 mM, and [Pi] = 4.3 mM. Furthermore, imagine that the pH inside the cell is 7.4. Given that ΔG°′ for creatine phosphate hydrolysis is -10.3 kcal/mol, what is the ΔG for creatine phosphate hydrolysis inside the above-described cell, which is at 37 °C? Report your answer in kcal/mol to the nearest tenths. Hint: you might wish to consult the chapter in our text that discusses thermodynamics.
Predict whether creatine kinase will operate in the direction of ATP synthesis or phosphocreatine synthesis at...
Predict whether creatine kinase will operate in the direction of ATP synthesis or phosphocreatine synthesis at 25°C when [ATP] = 4 mM, [ADP] = 0.15 mM, [phosphocreatine] = 2.5 mM and [creatine] = 1 mM. Show your work.
Standard Free Energy of Hydrolysis, ∆ G o', of some organophosphate compounds (phosphate isreleased as one...
Standard Free Energy of Hydrolysis, ∆ G o', of some organophosphate compounds (phosphate isreleased as one of the products of hydrolysis)                                     Compound kJ/mol phosphoenolpyruvate -61.9 carbamyl phosphate -51.4 creatine phosphate -43.1 acetyl phosphate -42.2 ATP (to ADP) -30.5 Glucose-1-phosphate -20.9 Glucose-6-phosphate -13.8 Glycerol-3-phosphate -9.2 Use the table in the above table to calculate the ∆G o' (in kJ/mol) for the following reaction: ATP +  glucose --------> ADP  +  glucose-6-phosphate
Explain how your skeletal muscles will use the three possible ATP sources: the phosphagen system, lactic...
Explain how your skeletal muscles will use the three possible ATP sources: the phosphagen system, lactic acid fermentation, and aerobic cellular respiration (not all will be used in each situation). 1- You get up from a nap and walk to the kitchen to make a sandwich. It is a fancy sandwich, so it takes you 10 minutes to make it. 2- You are sitting calmly on the couch watching your favorite show. 3- You are sitting calmly on a park...
If muscles run out of fuel from fat, sugar, and lipid then ATP levels can drop....
If muscles run out of fuel from fat, sugar, and lipid then ATP levels can drop. Describe two protein machines and the associated biochemical mechanisms that would be directly influenced by low ATP levels that could reduce or eliminate the ability of your body to release contracted muscles?
Calculate the ∆G˚´ for the first step of glycolysis (glucose + ATP ---> glucose-6-phosphate + ADP,...
Calculate the ∆G˚´ for the first step of glycolysis (glucose + ATP ---> glucose-6-phosphate + ADP, catalyzed by hexokinase), given the ∆G˚´ values of ATP hydrolysis and glucose-6-phosphate hydrolysis. (See notes, a biochemistry text, or an Internet resource for those ∆G˚´ values.) a) A positive value. b) Between 0 and –15 kJ/mol c) Between -15 and -25 kJ/mol d) Between –25 and -35 kJ/mol e) More negative than –35 kJ/mol
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT