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Situation: the autotrophs have produced sugar and oxygen. Energy 6CO2 + 6H 2 O C 6 H 12 O 6 + 6O 2 Now – how do we RELEASE the energy in that sugar?. ATP. Need to turn the sugar into ATP is the cell’s energy molecule. What Does ATP Do for You?.
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Situation: the autotrophs have produced sugar and oxygen. Energy 6CO2 + 6H2O C6H12O6 + 6O2 Now – how do we RELEASE the energy in that sugar?
ATP • Need to turn the sugar into • ATP is the cell’s energy molecule
What Does ATP Do for You? It supplies YOU withENERGY!
Adenine P P Adenine P P How Do We Get Energy From ATP? By breaking the last P – P bond P P
How Does That Happen? An Enzyme! ATPase
When is ATP Made in the Body? • During cellular respiration • both plants & animals do it!
Question: • In what kinds organisms does cellular respiration take place?
ATP Cellular Respiration is the reverse of photosynthesis C6H12O6 + 6O2 6CO2 + 6H2O+ energy
What are the Stages of Cellular Respiration? In cytoplasm 1. Glycolysis (sugar is split) In mitochondria: 2. The Krebs Cycle (citric acid cycle) 3. The Electron Transport Chain
Cellular Respiration ETC Krebs Cycle Glycolysis
Step 1: Glycolysis Glucose 2 pyruvic acid C-C-C-C-C-C C-C-C + C-C-C • http://www.northland.cc.mn.us/biology/Biology1111/animations/glycolysis.html
Mitochondria • Organellewhere cellular respirationtakes place.
Step 2: Kreb’s Cycle C-C-C CO2 & a whole bunch of NADHs http://www.science.smith.edu/departments/Biology/Bio231/krebs.html
Electron Transport Chain • High energy electrons used to convert ADP to ATP • http://www.science.smith.edu/departments/Biology/Bio231/etc.html
CR: 36 NET ATP Glycolysis C-C-C-C-C-C C-C-C O2 ETC Krebs Cycle CO2 + NADH ATP + H2O
Animation of CR:qcc.cuny.edu/BiologicalSciences/Faculty/DMeyer/respiration.htmlhttp://scholar.hw.ac.uk/site/biology/activity3.asp
What is the formula for cellular respiration? • MONDAY’S essential question (14)
Write a paragraph describing how energy goes from the SUN to ATP. • Use these words in your paragraph: energy; sun; capture; autotroph; heterotroph; sugar; ATP; mitochondria; chloroplast
Only Glycolysis can occur O2 Glycolysis C-C-C-C-C-C C-C-C ETC Krebs Cycle
Fermentation Occurs when O2isNOTpresent AKA anaerobic respiration Two types: Lactic Acid fermentation(muscle cells) Alcoholic fermentation(yeast) • Nets only 2 ATP (instead of 36)
Lactic Acid Fermentation • Animals (pain in muscle after workout) C C C C CC C C C C C C Glycolysis Pyruvic acid Lactic Acid glucose
Alcohol Fermentation • Plants and Fungi beer and wine C C C C CC C C C C C Glycolysis Pyruvic acid Ethanol glucose
Question: • Glucose (carbohydrate) is the main source of food for making ATP from cellular respiration. • What other food molecules can be used in Cellular Respiration?
Other organic molecules used for fuel: 1. Carbohydrates:polysaccharides 2. Fats:glycerols and fatty acids 3. Proteins:amino acids