Cellular Respiration Flashcards
Flows of energy into an ecosystem
Enter as sunlight and leaves as heat
Photosynthesis generates ____ and ____,
which are used in cellular respiration.
O2 and organic molecules
The breakdown of organic molecules is
Exergonic
It is a partial degradation of sugars that
occurs without O2
Fermentation
It consumes organic molecules and
O2 and yields ATP
Aerobic respiration
A type of respiration but consumes compounds other than O2
Anaerobic respiration
This includes both aerobic and anaerobic respiration but is often used to refer to aerobic respiration
Cellular respiration
Chemical equation of cellular respiration
C6H12O6 + O2 = 6CO2 + 6H2O + energy (ATP + heat)
Chemical reactions that transfer electrons between reactants are called
Redox Reaction
A substance loses electrons
Oxidation
A substance gains electrons
Reduction
Electron donor
Reducing Agent
Electron receptor
Oxidizing Agent
During cellular respiration, the fuel (such as glucose) is ___, and O2 is ___
oxidized, reduced
Electrons from organic compounds are usually first transferred to
NAD+
It functions as an oxidizing agent during cellular respiration
NAD+
represents stored energy
NADH
NADH passes the electrons to the ____
Electron transport chain
3 Stages of Cellular Respiration
Glycolysis, Citric acid cycle, Oxidative Phosphorylation
The process that generates most of the ATP is called
Oxidative Phosphorylation
TRUE or FALSE: Oxidative phosphorylation accounts for almost 94% of the ATP generated by cellular respiration
FALSE
A smaller amount of ATP is formed in glycolysis and the citric acid cycle by
Substrate-level Phosphorylation
TRUE or FALSE: Glycolysis harvests chemical energy by reducing glucose to pyruvate
FALSE
How many Pyruvate molecules that breaking of glycolysis produced?
2
