CHAPTER 8 - ATP ENZYMES Flashcards
Exportation of chemical process and cellular respiration.
Energy is require to do so.
Metabolic pathways begin with a molecule - a specific enzyme catalyses this process. What are the two pathways ?
- Anabolism and Catabolism
1) Anabolism consumes energy to build molecules from small compounds.
2) Catabolism releases energy by breaking down large molecules into smaller molecules.
Define Exergonic and Endergonic reactions and how they differ.
- Exergonic reactions release energy
- Endergonic absorb energy to form bonds.
Bio
study of how energy flows through living organisms
Bioenergetics
Study of how energy flows through living organisms
Energy is what ?
The capacity to do work
TRUE or FALSE: Thermal energy deals with the random movement of atoms or molecules.
TRUE
TRUE or FALSE: Heat is the transfer of thermal energy from one atom to another.
TRUE
What is potential energy?
Energy that matter posses due to its location or structure
Define chemical energy.
Potential energy available for release in a chemical reaction
Define Thermodynamics.
Study of energy transformations within a collection of matter or an object.
Define Thermodynamics.
Study of energy transformations within a collection of matter or an object.
First Law of Thermodynamics states that ….. AKA Principle of Conservation of Energy
Energy of the universe is constant, it can be transferred or transported, but not created or destroyed.
Second Law of Thermodynamics. Think about entropy.
- Every energy transferred increases the entropy of the universe.
- Entropy is the measurement of randomness/disorder.
Spontaneous Processes
Can occur with any input of energy (spontaneously), but do not happen quickly.
Free Energy
Portion of a systems energy that can perform work when temperature and pressure are the same/uniform/constant.
Substrates react with a reagent to generate a product. Reactant in a chemical reaction.
Enzymes react to substrates in order to bind to them to create a product.
What is ATP and what it consists of?
Adenine Triphosphate, it’s composed of a ribose sugar, adenine (nitrogenous base) and a 3 phosphate group.
Ezymes
Lower the energy barrier in order to catalyze reactions. (Speeds them up without being consumed)
Initial energy needed to start a reactant over an energy barrier.
Activation Energy.
Enzymes bind to a substrate and creates a product. What is the name of the binding process?
Enzyme-Substrate Complex.
What is the ACTIVE SITE in an enzyme-substrate complex?
The region where the substrate binds.
The activity/function of an enzyme is affected by environmental factors.
Temperature, pH, etc.
The activity/function of an enzyme is affected by environmental factors.
Temperature, pH, etc.
