In your body, what process converts the chemical energy found in glucose into the chemical energy found in ATP?
  • The reaction rate would decrease .
  • cellular respiration
  • denatured
  • catalyst
In a catalyzed reaction a reactant is often called a ____.
  • substrate
  • catalyst
  • active site
  • denatured
"Conservation of energy" refers to the fact that _____.
  • endergonic
  • energy cannot be created or destroyed but can be converted from one form to another
  • proteins
  • the free energy change for the reaction is positive, equilibrium favors the reactants, not the products
As a result of its involvement in a reaction, an enzyme _____.
  • reducing ea
  • is unchanged
  • substrate
  • is an organic catalyst
How do cells replace the energy-rich ATP that is destroyed in energy-coupled reactions?
  • hydrolysis
  • complex
  • chloroplasts use light energy to synthesize ATP, mitochondria synthesize ATP using energy that's released by oxidizing sugars and fats
  • The terminal phosphate of ATP is bound to the substrate
Enzymes work by _____.
  • endergonic
  • denatured
  • is an organic catalyst
  • reducing EA
A substrate binds to an enzyme at the _________, where the reaction occurs.
  • substrate
  • cofactor
  • catalyst
  • active site
When properly aligned, the enzyme and substrate from an enzyme-substrate (ES) _____.
  • catalyst
  • denatured
  • cofactor
  • complex
Why is ATP a good source of energy for biological reactions?
  • increasing the concentration of ammonia
  • γ-phosphate (the terminal phosphate)
  • a space station orbiting Earth
  • Triphosphate chains are unstable
What is energy coupling?
  • the free energy change for the reaction is positive, equilibrium favors the reactants, not the products
  • the use of energy released from an exergonic reaction to drive an endergonic reaction
  • The reaction rate would decrease .
  • The terminal phosphate of ATP is bound to the substrate
In cells, what is usually the immediate source of energy for an endergonic reaction?
  • ATP
  • catalyst
  • cofactor
  • denatured
Which part of the adenosine triphosphate molecule is released when it is hydrolyzed to provide energy for biological reactions?
  • γ-phosphate (the terminal phosphate)
  • Triphosphate chains are unstable
  • increasing the concentration of ammonia
  • The reaction rate would decrease .
A ______, such as a vitamin, binds to an enzyme and plays a role in catalysis.
  • catalyst
  • cofactor
  • substrate
  • active site
B is unfavorable by itself, but through energy-coupling, cells can use ATP to convert A into B. How is this done?
  • The unfavorable reaction is replaced by two favorable reactions
  • The terminal phosphate of ATP is bound to the substrate
  • The reaction rate would decrease .
  • the use of energy released from an exergonic reaction to drive an endergonic reaction
What will happen to the rates of the forward and reverse reactions when a catalyst is added?
  • The reaction rate would decrease .
  • hydrolysis
  • Both forward and reverse rates increase.
  • The terminal phosphate of ATP is bound to the substrate
An enzyme is considered _______ because of its ability to recognize the shape of a particular molecule.
  • catalyst
  • denatured
  • substrate
  • specific
Which of these are by-products of cellular respiration?
  • Triphosphate chains are unstable
  • heat, carbon dioxide, and water
  • increasing the concentration of ammonia
  • a space station orbiting Earth
In general, enzymes are what kinds of molecules?
  • exergonic
  • proteins
  • energy cannot be created or destroyed but can be converted from one form to another
  • substrate
Chemical energy is a form of _____ energy.
  • potential
  • endergonic
  • substrate
  • exergonic
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