RESPIRATION Flashcards
GENERAL EQUATION FOR PHOTOSYNTHESIS
6CO2 + 6H2O + energy ====> C6H12O6 + 6O2
GENERAL EQUATION FOR AEROBIC RESPIRATION
C6H12O6 + 6O2 =====> 6CO2 + 6H2O + energy
RESPIRATION
1) dark respiration
2) enzymatic breakdown of glucose using oxygen to produce ATP
THREE STAGES OF RESPIRATION
1) glycolysis
2) kreb’s cycle
3) electron transport system
GLYCOLYSIS
STARTING MATERIAL
=> glucose (photosynthesis)
=> water (H2O)
PRODUCTS
=> pyruvate/pyruvic acid
=> ATP (substrate-level phosphorylation)
KREB’S CYCLE
STARTING MATERIAL
=> pyruvic acid
PRODUCTS
=> CO2
=> NADH and FADH2
=> ATP (substrate-level phosphorylation)
ELECTRON TRANSPORT SYSTEM
STARTING MATERIAL
=> NADH and FADH2
PRODUCT
=> ATP (oxidative phosphorylation)
TWO COMPONENTS OF RESPIRATION
1) growth respiration
2) maintenance respiration
GROWTH RESPIRATION
1) energy converting products of photosynthesis to plant material
=> reduction of nitrate and sulfate from soil
=> active uptake of minerals and organic substrates
=> monomer synthesis
MAINTENANCE RESPIRATION
1) energy from protein breakdown and respiratory processes producing CO2
=> physiological adaptation to changing environment
=> cellular structures
=> intracellular gradients of ions and metabolites
FACTORS INCREASING RESPIRATORY RATES
1) age and nature of tissues
2) higher temperature
3) increased availability of oxygen
4) decreased levels of carbon dioxide
LIMITED LEVELS OF OXYGEN
hypoxia
ABSENCE OF OXYGEN
anoxia