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Fermentation Anaerobic Alternative to Aerobic Respiration
OK, if you are yeast... Making 2 ATP from glycolysis is enough
Only catch... NAD+ is used up So a cell needs a way to regenerate it
They Replenish NAD+ When yeast and bacteria convert pyruvic acid to CO 2 and ethanol (ethyl alcohol).
Alcoholic Fermentation “The production of ethanol from glucose” Is catalyzed by microbial (bacteria and yeast) enzymes
Yeast Acting on Pyruvic Acid Ethanol is released as a waste product O o o NAD+ CO 2
In Muscle Cells Lactic Acid Fermentation No CO 2 given off Eventually carried back to liver to be converted to pyruvic acid
Lactic Acid in Bacteria Used in dairy industry to make cheese and yogurt
Strict Anaerobes REQUIRE anaerobic (no oxygen) to live EXAMPLES: those that live in stagnant ponds and soil
Facultative Anaerobes Can make ATP by fermentation either by chemiosmosis or by fermentation, depending whether O 2 is present or not EXAMPLES: E. coli, yeasts
Why must oxygen be kept out of the wine and beer vats? If oxygen is present, the pyruvic acid will make CO2 and water. If oxygen is not present, yeast and bacteria will make ethanol and CO 2.
Ch. 6 Cellular Respiration 6.14 – Review: Each molecule of glucose yields many molecules of ATP Where do glycolysis & Krebs cycle take place & how.
Fermentation Cellular Respiration The respiration that we’ve discussed to this point has all relied on oxygen There are several types of respiration.
Fermentation H. Biology Ms. Kim. Fermentation Fermentation enables some cells to produce ATP without the use of oxygen (O2) Cellular respiration – Relies.
Fermentation. ATP - Adenosine TriPhosphate ATP is “spring-loaded” The phosphates have a negative charge –repel each other This means potential energy.
Anaerobic Energy Pathway. Fermentation Oxygen is not the final e- acceptor after the ETC Bacteria, protistans –Yogurt, yeast Glycolysis –2 NADH –2 ATP.
Cell Respiration (Aerobic Respiration). How do we get energy from food? Cell Respiration – mitochondria break down food to make ATP (energy) Formula:
Fermentation Chapter 9. What you need to know! The difference between fermentation and cellular respiration.
Anaerobic Energy Pathway Read 7.6 (pages ).
Fermentation and Control of Cellular Respiration AP Biology Unit 4.
Introduction and Anaerobic Respiration pp
4.6 Fermentation KEY CONCEPT Fermentation occurs in place of cellular respiration when oxygen is NOT present.
Ch. 7: Cellular Respiration Getting Energy from food.
4.6 Fermentation KEY CONCEPT Fermentation allows the production of a small amount of ATP without oxygen.
Fermentation Generating ATP without oxygen!. Some biochemistry When a cell generates large amounts of ATP through glycolysis NADH does not get converted.
CELL RESPIRATION Chapter 6. RESPIRATION Main goal = make ATP Cellular respiration is the reverse of the photosynthesis reaction Cell Respiration Chemical.
Fermentation Chapter 6. What you need to know! The difference between fermentation and cellular respiration.
Cellular Respiration Chapter 7 pgs Food to energy.
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 >
Cellular Respiration In photosynthesis, light energy is stored in the bonds of glucose molecules in the chloroplasts of plant cells (or other autotrophs).
Glycolysis & Fermentation Chapter 6. What is ATP? Analogy with the coins and the bending machine How does it function like a rechargeable battery?
Cellular Respiration In cellular respiration living things release the energy stored in food molecules. Cells may use aerobic respiration (using oxygen)
Cellular Respiration. Both autotrophs and heterotrophs use the compounds in food for energy sources. Autotrophs make their own glucose. Heterotrophs.
Cellular Respiration. Process cells use to harvest energy from organic compounds and convert it into ATP Breakdown of Glucose C 6 H 12 O 6 +6O 2 6CO 2.
Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes.
VI. Anaerobic Respiration This process occurs when oxygen is NOT available to produce ATP. This process occurs when oxygen is NOT available to produce.
Tuesday 12/20/10 AIM:Why do organisms perform cellular respiration? DO NOW: How does your body get the energy it needs?
Cellular Respiration. Cellular Respiration…What is it? -process by which cells make ATP by breaking down organic compunds. Why is it important? -cells.
Fermentation and anaerobic respiration enable cells to produce ATP without the use of oxygen Chapter 9, Section 5.
Aim: What is fermentation?. Anaerobic respiration enables some cells to produce ATP without the help of oxygen Oxidation refers to the loss of electrons.
Respiration Opposite Equation of Photosynthesis. Opposite of Photosynthesis is respiration C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + Energy ATP Glucose.
Cellular Respiration. WARNING! Pay attention! There is a quick 6 point quiz at the end!
CELLULAR RESPIRATION. WHO DOES CELLULAR RESPIRATION? Animals Humans Plants/Algae Basically any organism with nuclei & mitochondria So what other organisms.
Cellular Respiration. What does respiration mean to you?
After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.
CHAPTER 7: CELLULAR RESPIRATION 7-1: Glycolysis + Fermentation 7-2: Aerobic Respiration.
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.
Anaerobic Cellular Respiration. Aerobic… What? We have reviewed aerobic respiration This is the process of taking molecules of glucose and breaking them.
Fermentation (Anaerobic Respiration). Chemical Energy & Food Calorie- amount of energy needed to raise the temperature of 1 g of water 1 °C. Unit of.
Anaerobic Respiration. Key Concepts What happens if your body cannot supply enough oxygen to sustain cellular respiration?
9.3 Fermentation. Life without oxygen? Cellular respiration only happens when oxygen is present What happens if oxygen isn’t available?
Essential Knowledge 2.A.2: Organisms capture and store free energy for use in biological processes.
Cellular Respiration Unit. Overview of Respiration aerobic = requires oxygen to occur (ex: cellular respiration) (ex: cellular respiration)vs. anaerobic.
Anaerobic Respiration No oxygen available to accept used electrons.
Metabolis m Photosynthesis [8.2] Cell Respiration [8.3] Fermentation [8.3]
Cellular Respiration pp. 77 to 82. What is it? A process to convert glucose to ATP in order to obtain energy Occurs in all organisms (plants and animals)
Chapter 9: Cellular Respiration Energy in a substance: Measured by how much heat it releases Energy is measured in calories One calorie heats one gram.
Anaerobic Respiration - Fermentation13.1 Ecologists Study Relationships Anaerobic Respiration Or the making of energy with out oxygen.
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