Card Set Information
Cellular Respiration Fermentation
Cellular Respiration and Fermentation
What do living cells require to perform their tasks?
transfusions of energy from outside sources, assembling polymers, pumping substances across membranes, moving, and reproducing.
Where does the energy stored in organic molecules of food come from?
Sun - energy flows into an ecosystem as sunlight and exits as heat.
What does photosynthesis do?
Generates oxygen and organic molecules used by mitochondria of eukaryotes (including plants and algae) as fuel for cellular respiration.
What are the waste products of cellular respiration?
carbon dioxide and water, which are the raw materials of photosynthesis.
What is a catabolic pathway?
Metabolic pathway that releases stored energy by breaking down complex molecules.
Organic compounds possess potential energy as a result of ___________________?
The arrangement of electrons in the bonds between their atoms.
A partial degradation of sugars or other organic fuel that occurs without the use of oxygen.
Catabolic pathway in which oxygen is consumed as a reactant along with the organic fuel.
includes both aerobic and anaerobic processes although often used to refer to the aerobic process.
Electron transfers from one reactant to another, also called oxidation-reduction reactions.
The loss of electrons from one substance.
The addition of electrons to another substance.
The electron donor
The electron acceptor
Electron Transport Chain
Consists of a number of molecules, mostly proteins, built into the inner membrane of the mitochondria of eukaryotic cells and the plasma membrane of aerobically respiring prokaryotes.
What is the typical route of cellular respiration?
Glucose -- NADH -- electron transport chain -- oxygen.
3 Stages of Cellular Respiration
2. Pyruvate oxidation and the citric acid cycle
3. Oxidative phosphorylation
: electron transport and chemiosmosis
Occurs in the cytosol, begins the degradation process by breaking glucose into two molecules of a compound called pyruvate.
Citric Acid Cycle
Breakdown of glucose to carbon dioxide is completed
ATP synthesis that occurs when an inorganic phosphate is added to ADP, thus becoming ATP
The mode of ATP synthesis that occurs when an enzyme transfers a phosphate group frm a substrate molecule to ADP, rather than adding an inorganic phosphate to ADP.