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RESPIRATION WITHOUT OXYGEN
ANAEROBIC RESPIRATION Obligate anaerobes: Primitive bacteria (e.g. Clostridium) for them O 2 is poisonous Facultative anaerobes: Yeasts (also muscle tissue) can withstand a lack of oxygen for short periods Can also respire aerobically Baker’s yeast Saccharomycese cervisiae © P Billiet © 2010 Paul Billiet ODWSODWS
Anaerobic respiration is less efficient The electron transport chain needs free oxygen to function Only a few molecules of ATP are produced By reactions directly coupled to the oxidation of glucose in glycolysis Net ATP gain per molecule of glucose = 2ATP © 2010 Paul Billiet ODWSODWS
Electrons and protons to spare But what is to be done with all the spare electrons and protons? These are used to reduce: Pyruvate Lactate (lactic acid) or Pyruvate (via ethanal) Ethanol + CO 2 © 2010 Paul Billiet ODWSODWS
Facultative anaerobes must control themselves! Much more ATP is produced in the presence of O 2 (18 times more) So: When O 2 is present: respiration is slow (negative feedback control) When O 2 is absent: respiration is fast ATP and Citrate (formed in the Kreb's Cycle) inhibit the enzyme that phosphorylates glucose (phosphofructokinase) at the beginning of glycolysis = THE PASTEUR EFFECT A good example of allosteric inhibition © 2010 Paul Billiet ODWSODWS
Anaerobic Respiration No oxygen available to accept used electrons.
Cell Respiration. How do we get energy from food? Cell Respiration – mitochondria break down food to make ATP (energy) Formula: C 6 H 12 O 6 + 6O >
Catabolism – Electron Transport. Catabolism -- Overview.
Biology I August the process in which glucose is broken down to produce ATP (energy) Performed by ALL cells (plant, animal, bacteria) Two.
Cellular Respiration Respiration is the process of breaking down food molecules to release energy. Respiration is the process of breaking down food molecules.
Fermentation. ATP - Adenosine TriPhosphate ATP is “spring-loaded” The phosphates have a negative charge –repel each other This means potential energy.
If you did a 10 minute wall sit, what would your muscles start to feel like? Why do they begin to feel like that?
Respiration The energy making process that occurs continuously in all organisms The energy making process that occurs continuously in all organisms Stored.
NOTES: Ch 9, part & Fermentation & Regulation of Cellular Respiration.
Cellular Respiration Unit Review Guide CA Standard 1g.
Chemical Pathways Cellular Respiration (aerobic) – process that releases energy by breaking down glucose and other food molecules; O 2 is required
Metabolic Pathways Most of the ATP that is generated in the body is produced through the process of oxidative phosphorylation. This process is dependent.
Cell Respiration. Cell Respiration-process by which the mitochondria break down glucose to make ATP. (produces 36 ATP’s) Reactants :Oxygen, glucose Products.
Cellular Respiration Part 1: Glycolysis & Fermentation.
Warm-up Explain the process of cellular respiration in your own words. Copyright Cmassengale.
Anaerobic Respiration. During the last stage of cell respiration, electrons from glucose are passed down the electron passport chain to the final electron.
Essential Knowledge 2.A.2: Organisms capture and store free energy for use in biological processes.
Cellular Respiration Part 5 Fermentation – Pages.
Energy Transfer: Cellular Respiration G.Burgess Updated 2010.
Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes.
From Glucose to ATP. Equation C 6 H 12 O 6 + 6O2 6CO 2 + 6H 2 O + ATP Glucose and Oxygen produces Carbon Dioxide, Water and ATP energy.
Anaerobic Cellular Respiration: Lactate Fermentation and Ethanol Fermentation Sec. 7.4.
ATP and Cellular Respiration Breakdown of a Glucose Molecule to make ATP so our cells can perform chemical reactions.
© 2014 Pearson Education, Inc. Figure 7.2 Light energy ECOSYSTEM Photosynthesis in chloroplasts CO 2 H 2 O Cellular respiration in mitochondria Organic.
Cellular Respiration Energy For Cells. Cellular Respiration Energy is released by breaking the bonds of food molecules (such as glucose) to make ATP from.
What is respiration? 3 Sentences. Mr. Dunnum.
Anaerobic Respiration explain why anaerobic respiration produces a much lower yield of ATP than aerobic respiration; compare and contrast anaerobic respiration.
Cell Respiration (Aerobic Respiration). How do we get energy from food? Cell Respiration – mitochondria break down food to make ATP (energy) Formula:
Energy in a Cell Cellular Respiration. Cellular respiration: process where mitochondria break down food molecules to produce ATP. (energy)
Cell Respiration Breathing inhale air to get oxygen exhale air to release carbon dioxide Cell respiration Cells use oxygen and glucose Produce ATP and.
Aerobic Respiration vs. Fermentation. Aerobic Respiration “Aerobic” means “with oxygen” Oxygen is required for these processes to occur: it is the.
Fermentation and anaerobic respiration enable cells to produce ATP without the use of oxygen Chapter 9, Section 5.
Cellular Respiration Review. Notes You may use your notes on the test. Whether or not you use them you will turn them in with your test on Wed.
CELLULAR RESPIRATION. Glycolysis CELLULAR RESPIRATION Process in which 1 molecule of glucose is broken in half, producing 2 molecules of pyruvic acid.
Glycolysis and Fermentation Chapter 5 Continued. Before we start, what is cellular respiration? The process in which organisms take molecules broken down.
Cellular Respiration How organisms make ATP. Cellular Respiration The process that produces energy (ATP) by breaking down food molecules 6O 2 + C 6 H.
Cellular Respiration & Fermentation Chapter 8. Cell Respiration All organisms need energy from food. They obtain this energy through a process called.
Cellular Respiration Process used by cells to release energy from foods using oxygen (aerobic) Involves glycolysis, the Krebs Cycle, & e- transport chain.
Chapter 7 Anaerobic Respiration and Fermentation.
Fermentation and Control of Cellular Respiration AP Biology Unit 4.
3.7.3 Explain that, during anaerobic cell respiration, pyruvate can be converted in the cytoplasm into lactate, or ethanol and carbon dioxide, with no.
Cellular Respiration. The process by which the mitochondria breaks down glucose to produce ATP is called cellular respiration. C 6 H 12 O 6 + 6O 2 6CO.
Chapter 9 Cellular Respiration TWO TYPES OF RESPIRATION ________ Respiration=________ Respiration. Happens only when Oxygen is available. Anaerobic Respiration.
Recap: structure of ATP P P P riboseguanineinorganic phosphate deoxyribosethymine organic phosphate nicotinamidecytosineadenineflavine.
Cellular Respiration Part V: Oxidative Phosphorylation.
Fun for all eukaryotic organisms…. Cell Respiration 1.
Cellular Respiration Part V: Fermentation and other details.
Cells and Energy Chapter 4 Mr. Scott. Cellular Respiration Organic molecules can act as fuels Organic molecules can act as fuels –Fermentation – no oxygen.
Cellular Respiration. WARNING! Pay attention! There is a quick 6 point quiz at the end!
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