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.

Remove ads
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




share
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

BIO 120 Chapter 8

Metabolism

TermDefinition
Metabolism- the totality of an organism’s chemical reaction
Metabolic pathway- begins with a specific molecule, altered through a series of steps each with a different enzyme to catalyze the reaction, end result is a new product
Anabolic pathway- consume energy to build complex molecules from simpler ones
Catabolic pathway- Breaking down complex molecules to simpler ones
Endergonic- absorbs free energy, positive delta G, anabolic pathway
Exergonic- release of free energy, negative delta G, spontaneous, catabolic pathway
Spontaneous- energetically favorable
Kinetic energy- energy of motion
Thermal energy- kinetic energy associated with the random movement of atoms or molecules
Heat- thermal energy in transfer from one object to another
Potential energy- energy that matter possesses because of its position or structure
Chemical energy- the potential energy available for release in a chemical reaction
Energy- the capacity to cause change
Thermodynamics- the study of energy transformations that occur in a collection of matter
First law of thermodynamics- energy can be transferred and transformed, but it cannot be created or destroyed
Second law of thermodynamics- every energy transfer or transformation increases the entropy of the universe
Entropy- a measure of disorder or randomness
Free energy change- the portions of a systems energy that can perform work
Gravitational motion- objects move spontaneously from a higher altitude to a lower one
Diffusion- molecules in a drop of dye diffuse until they are randomly dispersed
Energy coupling- the use of an exergonic process to drive an endergonic one
ATP- adenosine triphosphate, energy
ATP cycle- energy released by breakdown reactions in the cell is used to phosphorylate ADP, regenerating ATP. Chemical potential energy stored in ATP drives cellular work.
Enzyme- macromolecule that acts as a catalyst
Catalyst- a chemical agent that speeds up a reaction without being consumed by the reaction
Activation energy- initial investment of energy required to start a reaction
Substrate- the reactant an enzyme acts on
Enzyme-substrate complex- When the enzyme binds to its substrate
Active site- the restricted region of the enzyme the substrate binds to
Competitive inhibition- blocks substrate from entering competitive site
Noncompetitive inhibition- alters the shape of the enzyme so the substrate doesn’t fit and cannot bind
Created by: mr_spangler