Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

SGU: Metabolism

Biochem: Bioenergetics of Metabolism

QuestionAnswer
What is the Gibb's free energy equation for a reation? DeltaG=deltaH-TdeltaS
What does the Gibb's free energy equation measure? The change in free energy during a chemical reaction.
In what direction does a reaction go if the Delta G is negative? towards products/forward
When Keq is close to 1 in which direction does the reaction go? Reaction is at equilibrium
If the delta G is positive is the reaction spontaneous? No
At what conditions is delta G naut? 1M [] and pH7
If a reaction is endergonic is the delta G positive or negative? positive
What are the high energy compounds? phosphoenolpyruvate, 1,3 bis-P-glycerate, phosphocreatine, pyrophosphate, phosphoarginine, acetylCoA
Why is the free energy of ATP hydrolysis so high? many negative phosphate groups in close proximity, resonance of products, and products increases entropy
explain the equation for Gibb’s free energy The amount of free energy in a system is equal to the change of heat in a reaction at constant temperature and pressure minus the increase in disorder (entropy) times the temperature.
Discuss the role of ATP in energy metabolism ATP donates a phosphate group to a substrate to activate it, a irreversible reaction. ATP is the universal form of energy and contains a high energy phosphoanhydride bond.
Describe the importance of coupling of reactions in metabolism the energy produced by one exergonic reaction is used to drive another endergonic reaction. The overall sum of ∆G must be negative.
Created by: mnoronha