Presentation on theme: "Respiration! Cellular. Cellular Respiration Purpose: process that releases energy by breaking down glucose and other foods in the presence of oxygen –"— Presentation transcript:
Cellular Respiration Starts with Glycolysis (process producing ATP molecules) It then goes in one of two directions depending on whether oxygen is available. If O 2 is available -> Krebs cycle … Electron transport chain (all aerobic) If O 2 is NOT available -> Fermentation (anaerobic)
Stages of Cellular Respiration Glycolysis 1. Glycolysis Occurs in the cytoplasmOccurs in the cytoplasm A very fast, anaerobic process of “splitting glucose”A very fast, anaerobic process of “splitting glucose” Produces 2 ATP molecules overallProduces 2 ATP molecules overall
Stages of Cellular Respiration IF OXYGEN IS PRESENT… 2.Kreb’s Cycle Occurs in the mitochondriaOccurs in the mitochondria Aerobic processAerobic process 3.Electron Transport Chain Occurs in the mitochondriaOccurs in the mitochondria
Stages of Cellular Respiration IF OXYGEN IS NOT PRESENT 2.Fermentation Anaerobic respiration occursAnaerobic respiration occurs
Anaerobic respiration (fermentation) Releasing energy from food by producing ATP without oxygen 2 types of fermentation 1) alcoholic fermentation (plants, bacteria) -produces alcohol and CO 2 2) lactic acid fermentation (animals) -produced in muscles during rapid exercise…
Anaerobic Respiration Anaerobic respiration, or fermentation, takes place in the cytoplasm
Anaerobic Respiration It is a different way to make ATP compared to aerobic respiration because it DOES NOT use oxygen.
Glycolysis only makes: Glycolysis only makes: 2 ATP2 ATP Lactic acidLactic acid - Toxic (harmful to cells)
2 Types of Fermentation lactic acid fermentation – Lactic acid is toxic (it makes your muscles sore)
Comparing Aerobic vs. Anaerobic Aerobic Respiration Anaerobic Respiration Takes place in the mitochondria Takes place in the cytoplasm
Comparing Aerobic vs. Anaerobic Aerobic Respiration Anaerobic Respiration Produces LOTS of ATP Very little ATP produced
Comparing Aerobic vs. Anaerobic Aerobic Respiration Anaerobic Respiration Endurance Used for short bursts of energy
Comparing Aerobic vs. Anaerobic Aerobic Respiration Anaerobic Respiration No harmful effects or toxins produced Produces lactic acid (toxic)
Comparing Aerobic vs. Anaerobic Aerobic Respiration Anaerobic Respiration Much more efficient Less efficient
Anaerobic Respiration ***You get WAY more ATP from aerobic respiration than you do from anaerobic respiration (fermentation). Fermentation is mostly used to provide organisms with short-term bursts of energy when oxygen is not available.