Energy 101
Energy that is stored in chemical bonds
What is chemical energy?
What is potential energy?
All chemical reactions that occur in a cell
What is metabolism
Biological molecules that decrease the energy of activation for chemical reactions
What are enzymes?
Most of the process of cellular respiration occurs here
What is the mitochondria
This step of cellular respiration is called the energy investment step
What is glycolysis?
Energy cannot be created or destroyed, but it can be changed from one form to another
What is the First Law of Thermodynamics?
A chemical reaction that breaks down a molecule
What is a catabolic reaction?
The site where a substrate binds to an enzyme
What is the active site?
The first step of cellular respiration
What is glycolysis?
The citric acid cycle runs this number of times per glucose molecule
What is twice?
Energy cannot be changed from one form to another without a loss of usable energy
What is the Second Law of Thermodynamics?
A chemical reaction that requires an input of energy to occur
What is an endergonic reaction?
Most enzymes are this type of macromolecule
What is a protein?
(anaerobic respiration)
What is H+?
The energy currency of the cell
What is ATP?
The energy required for a reaction to occur
What is the activation energy?
An example of something that can mediate enzyme activity
What is substrate concentration?
What is pH?
What is temperature?
The third step of cellular respiration
What is the citric acid cycle?
These molecules carry electrons to the electron transport chain
What are NADH and FADH2?
Many energy transformations lose energy in the form of this
What is heat?
A paired set of reactions where one molecule gives up electrons and another molecule receives electrons
What is a REDOX reaction?
An enzyme unfolding at high temperatures
What is denaturation?
The most energy producing step of cellular respiration
What is the electron transport chain?
The location of the electron transport chain
What is the inner mitochondrial membrane