Cellular Respiration Cellular respiration is releasing energy from
- Slides: 15
Cellular Respiration
Cellular respiration is releasing energy from glucose and other foods in the presence of oxygen.
Occurs in the mitochondria of both animals and plants.
Cellular Respiration (aerobic) Energy->ATP and heat REACTANTS PRODUCTS
Reactants Products • Glucose (C 6 H 12 O 6) Energy (36 ATP) • Oxygen (aerobic) Byproducts… -water -CO 2 (carbon dioxide)
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 (Citric Acid) Cycle … Electron transport chain (all aerobic) • If O 2 is NOT available -> Fermentation (anaerobic)
Aerobic: process which requires oxygen
Fast Facts… • Glycolysis (1 st step in respiration) is very fast, can produce thousands of ATP molecules in under a second!
Rigor Mortis • Why do dead vertebrate animals become stiff shortly after death? • Body ceases (stops) doing cellular respiration. No ATP produced. No energy for muscle movement.
Anaerobic respiration (fermentation) • Releasing energy from food by producing ATP w/out 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…
Alcoholic and lactic acid fermentation • Alcoholic fermentation – yeast use this, they run out of oxygen, give off CO 2 • Lactic acid fermentation- oxygen not being supplied fast enough to muscle cells…ATP can’t be produced as quickly – Thus, muscle cells must produce their own ATP by lactic acid fermentation
Evidence of alcoholic fermentation
Summary… Aerobic Respiration • GLYCOLOSIS -> Kreb’s Cycle -> E. T. C • lots of ATP (36 per 1 glucose molecule) • endurance • no harmful effects
Anaerobic respiration (fermentation) • little ATP (2 per glucose molecule) • short bursts of energy • lactic acid (animals) or alcohol (other organisms) is also made…both harmful
Gotta get that ATP! YOUtube video Click
- Energy-releasing pathways
- The energy-releasing process that is fueled by oxygen
- The stages of cellular respiration
- Energy flow in cellular respiration
- Chemical cycling in an ecosystem
- Chapter 9 cellular respiration harvesting chemical energy
- Chapter 9: cellular respiration: harvesting chemical energy
- Cellular respiration obtaining energy from food
- Cellular respiration obtaining energy from food
- Electron transport chain summary
- Chapter 8 section 1 how organisms obtain energy
- Releasing inhibiting hormones
- Reciprocal plate rpd
- Corticotropin releasing hormone
- Maxine greene releasing the imagination
- Alter cast technique