cellular respiration (10) Flashcards
balanced equation for cellular respiration
C6H12O6 + 6O2 -> 6Co2 + 6H2O + ATP
aerobic respiration
is the process by which organisms use oxygen to turn fuel, such as fats and sugars, into chemical energy.
Glycolysis
Glucose broken down into 2 molecule of pyruvate
❖2 ATPs produced
❖2 NADH produced ❖No oxygen needed at this
stage
Forming of Acetyl co-enzyme
CO2 removed ❖1 NADH produced ❖2 C-compound moves into mitochondria (Acetyl CoA) ❖Used in the next stage (Krebs Cycle) ❖Controlled by amount of O2 available
krebs cycle
Acetyl CoA merges combines with oxaloacetic acid – citric acid (6-C)
❖Citric acid oxidised ❖3 NADH
❖1 FADH2 ❖2 CO2 ❖1ATP
hydrogen transfer system
Energy from hydrogens is removed to form ATP ❖Exhausted hydrogens bind with oxygen to for water ❖Each NADH has enough energy to form 3 ATPs ❖Each FADH2 can form 2 ATPs
where does the kreb cycle take place
mitochondria
NADH =
3 ATPS
FADH2 =
2ATPS
2 x Pyruvates =
2 x krebs cycle
glycolysis produces
2 x ATPS
2 x NADH = 6 ATPS
(overall 8 ATPS)
forming of acetyl co enzyme forms
2 x NADH = 6ATPS
Krebs cycle (happens twice)
6 x NADH = 18 ATP
2 x FADH2 = 4 ATP
2 x ATPS
(overall 24 ATP)
how much ATP is produces in one aerobic cycle
38 ATP
anaerobic respiration
the productions of energy in the absence of oxygen
where can anaerobic respiration occur
- plants
- animal cells
- pathogens / unicellular organisms
lactic acid fermentation
anaerobic respiration in animal cells
alcoholic respiration
anaerobic respiration in plant cells
is anaerobic respiration energy effective
neither of them are energy effective respiration in contrast to aerobic respiration
