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Cellular Respiration and Fermentation - Flashcards

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Class:BIOL 1107L - Essentials of Biology I Lab
Subject:Biology
University:Georgia Southwestern State University
Term:Spring 2011
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Cellular Respiration the aerobic harvesting of energy from food molecules
Aerobic in the presence of or requiring oxygen
Fermentation an anaerobic alternative to cellular respiration, where the only energy harvested comes from glycolysis and either alcoholic or lactic acid fermentation follows producing the NAD+ that keeps glycolysis going
Anaerobic without oxygen
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What is the general formula for CELLULAR RESPIRATION? C6H12O6 + 6 O2 -------> 6 CO2 + 6 H2O + ATP (glucose + oxygen gas ------> carbon dioxide + water + energy
What is required for FERMENTATION? Glucose is required in order for glycolysis to work
What is produced in FERMENTATION? CO2; carbon dioxide
In the lab 1.What generated gas? 2.Why? 3.What gas? 4.What product was not tested? 1. the tube with yeast, water, and sugar. 2. sugar is the food/energy source that allows it to happen 3. CO2 4. ethanol
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Glycolysis Occurs in the cytoplasm -anaerobic -pyruvate goes to 2-carbon ethanol
Citric Acid Cycle AKA Kreb's Cycle -occurs in the mitochondria -produces carbon dioxide, ATP, NADH, and FADH
What checked if Cellular Respiration was occurring & if NADH was being produced? the corn seed experiement
What is the "fuel" that allows cellular respiration to occur? Amalase
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How do these corn seeds get that fuel? Starch is a glucose polymer.
What is the indicator? What is it indicating? Tetrazolium; when NADH is produced, it donates its electrons to tetrazolium. This reduces the tetrazolium and makes it turn red.
Where do the corn seeds appear red and why only there? They appear red at the embryo. This is where the NADH is reduced.
Where do the electrons to reduce the tetrazolium come from? The Hydrogen from the NADH
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If you boiled the corn seeds, would you get the same result? No. Dead things do not go through cellular respiration.
What happens next to the NADH generated in the Citric Acid Cycle? goes to the Electron Transport Chain
Where does Oxidative Phosphorylation occur? Mitochondria
Electron Transport Chain NADH goes through electrons on the inner membrane to form O2. Also goes through the intermembrane space creating hydrogens which flow through a channel to turn ADP into ATP in the matrix. This is called ATP sythase.
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For every NADH dumped in the ETC, how many ATP are produced? 3 ATP
For every FADH dumped in the ETC, how many ATP are produced? 2 ATP
What experiment was used for Cellular Respiration? dried peas and germinating peas
For the germinating peas, where does the O2 go? consumed by mitochondria
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Where does the CO2 come from? produced between Glycolysis and Citric Acid Cycle as carbon compounds break down
Would the trends be any different for either gas if you were in the chamber? No. Oxygen is still being consumed and carbon dioxide is still being produced.
Where does the O2 you breathe in go? to the lungs and gets transported by circulatory system to cells and used in mitochondria
Where does the CO2 you breathe out come from? from the lungs, generated by Citric Acid Cycle
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What is the relationship between cellular respiration and breathing? Breathing is not cellular respiration but cellular respiration is why you breathe.
What happens to the organism if it uses up all the oxygen? It dies. There is no more ATP being produced.
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 Cellular Respirationthe aerobic harvesting of energy from food molecules
 Aerobicin the presence of or requiring oxygen
 Fermentationan anaerobic alternative to cellular respiration, where the only energy harvested comes from glycolysis and either alcoholic or lactic acid fermentation follows producing the NAD+ that keeps glycolysis going
 Anaerobicwithout oxygen
 What is the general formula for CELLULAR RESPIRATION?C6H12O6 + 6 O2 -------> 6 CO2 + 6 H2O + ATP

(glucose + oxygen gas ------> carbon dioxide + water + energy
 What is required for FERMENTATION?Glucose is required in order for glycolysis to work
 What is produced in FERMENTATION?CO2; carbon dioxide
 In the lab 1.What generated gas? 2.Why? 3.What gas? 4.What product was not tested?1. the tube with yeast, water, and sugar.
2. sugar is the food/energy source that allows it to happen
3. CO2
4. ethanol
 GlycolysisOccurs in the cytoplasm
-anaerobic
-pyruvate goes to 2-carbon ethanol
 Citric Acid CycleAKA Kreb's Cycle
-occurs in the mitochondria
-produces carbon dioxide, ATP, NADH, and FADH
 What checked if Cellular Respiration was occurring & if NADH was being produced?the corn seed experiement
 What is the "fuel" that allows cellular respiration to occur?Amalase
 How do these corn seeds get that fuel?Starch is a glucose polymer.
 What is the indicator? What is it indicating?Tetrazolium; when NADH is produced, it donates its electrons to tetrazolium. This reduces the tetrazolium and makes it turn red.
 Where do the corn seeds appear red and why only there?They appear red at the embryo. This is where the NADH is reduced.
 Where do the electrons to reduce the tetrazolium come from?The Hydrogen from the NADH
 If you boiled the corn seeds, would you get the same result?No. Dead things do not go through cellular respiration.
 What happens next to the NADH generated in the Citric Acid Cycle?goes to the Electron Transport Chain
 Where does Oxidative Phosphorylation occur?Mitochondria
 Electron Transport ChainNADH goes through electrons on the inner membrane to form O2. Also goes through the intermembrane space creating hydrogens which flow through a channel to turn ADP into ATP in the matrix. This is called ATP sythase.
 For every NADH dumped in the ETC, how many ATP are produced?3 ATP
 For every FADH dumped in the ETC, how many ATP are produced?2 ATP
 What experiment was used for Cellular Respiration?dried peas and germinating peas
 For the germinating peas, where does the O2 go?consumed by mitochondria
 Where does the CO2 come from?produced between Glycolysis and Citric Acid Cycle as carbon compounds break down
 Would the trends be any different for either gas if you were in the chamber?No. Oxygen is still being consumed and carbon dioxide is still being produced.
 Where does the O2 you breathe in go?to the lungs and gets transported by circulatory system to cells and used in mitochondria
 Where does the CO2 you breathe out come from?from the lungs, generated by Citric Acid Cycle
 What is the relationship between cellular respiration and breathing?Breathing is not cellular respiration but cellular respiration is why you breathe.
 What happens to the organism if it uses up all the oxygen?It dies. There is no more ATP being produced.
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