cellular respiration Flashcards
aerobic respiration
the set of pathways in cellular respiration that requires oxygen
mitochondrial Matrix
the space inside the inner membrane of the mitochondria
Krebs cycle
a biochemical pathway that breaks down acetylCoA, ATP, CO2
f a d
accepts electrons during redox reactions
the breakdown product of glucose that diffuses into the mitochondrial Matrix for further breakdown
pyruvic acid
the starting substance of the Krebs cycle (which is regenerated at the end of the cycle)
oxaloacetic
produces two molecules of CO2
the Krebs cycle
the electron transport chain of aerobic respiration function
pumps protons into the space between the inner and outer mitochondrial membranes
the maximum efficiency of aerobic respiration
39%
what is the final electron acceptor at the end of the etc
oxygen
how many nadh molecules are produced during the Krebs cycle
three
what is the equation for the complete oxidation of glucose in aerobic respiration
C6H12O6 + 6O2 –> 6CO2 + 6H2O + energy
glycolysis
glucose splitting
lactic acid fermentation
fermentation that takes place during exercise
where does glycolysis take place
in the cytosol
during glycolysis glucose is
partially broken down and some of its stored energy is released
both lactic acid fermentation and alcoholic fermentation produce
nad+ from nadh and H+
the efficiency of glycolysis
2%
the anaerobic pathways provide enough energy to meet all of the energy needs of
many unicellular and some multicellular organisms
the two fermentation pathways referred to as anaerobic
lactic acid, alcoholic
what are the energy containing products of glycolysis
pyruvic acids, ATP, nadh
respiration
food to energy
what do cells need energy for
reproduction, dehydration synthesis, active transport, movement, growth
what is ATP
usable energy
net gain and normal gain of glycolysis
2, 4
two major stages of aerobic respiration
krebs cycle, ETC
krebs cycle location
mitochondrial Matrix
as crossing membrane pyruvic acid is converted jnto
AcetyCoA
broken down acetylCoA makes
CO2, 2ATPs, NADH and FADH2
ETC location
mitochondrial MEMBRANE
glucose yeilds
32 ATP
why do we need O2
cpmbines with excess H to make H2O and keeps respiration going
products kf alcohol fermentation
CO2 and Ethyl Alcohol
products of lactic acid fermentation
lactic acid
ATP has
3 phosphate groups
energy released by broken ATP bonds is used for
active transport, dehydration synthesis, movement
ATP comes from
food
1 glucose molecule contains
90 ATP
store energy in bonds
endergonic
releases energy from bonds
exergonic
