AP Biology

Cellular RespirationPart 1

Electron Transport chain creating a concentration gradient in a Thylakoid

Redox reaction

Energy Coupling between Photosynthesis and Cellular

Respiration

ECOSYSTEM

Lightenergy

Photosynthesisin chloroplasts

Cellular respirationin mitochondria

Organicmolecules

+ O2CO2 + H2O

ATP

powers most cellular work

Heatenergy

Cellular Energy

Is Oxygen present?

Photosynthesis and Cellular Respiration chemical reactions

(Remember… conservation of matter.)

6 CO2 + 6 H2O C6H12O6 + 6 O2 + HeatPhotosynthesis

C6H12O6 + 6O2 6CO2 + 6H2O + Heat + Free ECellular Respiration

ATP Structure

Phosphorylation using Free energy

Redox reaction

Valence is important with electronegativity

Series of Redox reaction(Electron Transport chain)

“Making” of electron carriers

• NAD⁺ +2 electrons + H⁺ ion = NADH

• FAD⁺ + 2 electrons + 2 H⁺ ions = FADH₂

Electron Transport Chain is ALWAYS located on a membrane

Oxygen is at the end

Process of Cellular Respiration

Energy Investment Phase &Phosphofructokinase

Energy Payoff Phase