BIOA01H3 Lecture Notes - Lecture 23: Photosynthesis, Photosynthetic Reaction Centre, Glycerol
3363410481 and 37710 others unlocked
18
BIOA01H3 Full Course Notes
Verified Note
18 documents
Document Summary
Lec 23: complete cellular respiration: anaerobic metabolism and metabolic integration. Fermentation: breakdown of glucose in the absence of oxygen. Before the presence of atmospheric oxygen organisms used lactic acid or ethanol fermentation to generate atp needed for cellular processes. Cellular respiration can occur in the absence of oxygen but needs a final electron acceptor such as nitrate or sulfate. Aerobic organisms harness more energy from organic molecules to power the work of. Evolved before aerobic respiration which requires oxygen the cell. Electrons from nadh are transferred to pyruvate to produce lactic acid and nad + Glucose + 2 adp + 2 p i 2 lactic acid + 2 atp + 2 h 2 o. Pyruvate releases carbon dioxide to form acetaldehyde. Electrons from nadh are transferred to acetaldehyde to produce ethanol and nad + Glucose + 2 adp + 2 p i 2 ethanol + 2 atp + 2 co 2 + 2 h 2 o.