Chapter 9.1, Part 1 Flashcards
Fermentation
A catabolic process; A partial degradation of sugars or other organic fuels, which occurs without the use of oxygen.
Aerobic Respiration
The most efficient catabolic pathway; Oxygen is consumed as a reactant along with the organic fuel.
Anaerobic Respiration
A catabolic process; Substances other than oxygen are consumed as a reactant.
Aerobic Respiration Equation
Organic Compounds + Oxygen -> Carbon Dioxide + Water + Energy
C6H12O6 + 6[O2] -> 6[CO2] + 6[H2O] + Energy (ATP + heat)
What else (other than oxygen) can also be processed and consumed as fuel in Aerobic Respiration?
- Carbohydrates
- Fats
- Proteins
How do catabolic pathways that decompose glucose and other organic fuels yield energy?
Through the transfer of electrons – Redox Reactions.
Redox Reactions/Oxidation-Reduction Reactions
Electron transfers; The transfer of one or more electrons (e-) from one reactant to another.
Oxidation
In a redox reaction, the loss of electrons from one substance.
Reduction
In a redox reaction, the addition of electrions to another substance.
Reducing Agent
The substance that is the electron donor.
Substance X reduces the amount of positive charge in Substance Y by donating an electron.
Oxidizing Agent
The substance that is the electron acceptor.
Substance Y increases the amount of positive charge in Substance X by accepting an electron.
What is the energy-yilding redox process of greatest interest?
Respiration
Respiration
The oxidation of glucose and other molecules in food.
What are the reactants and products of respiration?
Reactants: C6H12O6 + 6[O2]
Products: 6[CO2] + 6[H2O] + Energy
What is oxidized in cellular respiration?
The fuel, glucose, is oxidized into carbon dioxide.
