Presentation on theme: "Tuesday 12/20/10 AIM: Why do organisms perform cellular respiration? DO NOW: How does your body get the energy it needs?"— Presentation transcript:
1 Tuesday 12/20/10AIM: Why do organisms perform cellular respiration? DO NOW: How does your body get the energy it needs?
2 What is RESPIRATION??process by which a cell breaks down food (glucose) and changes the energy stored in food into a more usable form (ATP).**it occurs in the cells of ALL ORGANISMS !There are 2 Types of respiration…1. Aerobic 2. Anaerobic
3 What is AEROBIC Respiration?? AEROBIC = with oxygenprocess of breaking down glucose in the presence of oxygen to produce a lot of energy (36 ATP’s).**occurs only in the presence of OXYGEN !!Formula:Glucose + oxygen + water→ carbon dioxide + water + 36 ATPC6H12O6 + H2O +O CO H2O ATP
5 What are REACTANTS?substances that go INTO a reaction.Reactants for aerobic resp :Glucose – from food ingested.Oxygen – from the environmentWater – from the environment
6 What are PRODUCTS?substances that are produced by a reaction.Products of aerobic resp:CO2 –- waste product that is excreted into the environment.H20 –- waste product that is excreted into the environment.
7 - high energy compound that is used to fuel cell processes. ATP- high energy compound that is used to fuel cell processes.What is cellular respiration?Write down New Vocab words!
8 Where does it occur in the cell? **it occurs in the MITOCHONDRIA of all organisms !
9 What is ANAEROBIC RESPIRATION (or FERMENTATION)? ANAEROBIC = without oxygenprocess that produces a smaller amount of energy (2 ATP’s) by breaking down glucose WITHOUT OXYGEN!** occurs when oxygen IS NOT available!There are 2 TYPES…
10 produces alcohol as an end product. Formula: 1. ALCOHOL FERMENTATIONproduces alcohol as an end product.Formula:Glucose → alcohol + carbon dioxide + 2ATP + heatC6H12O6 → alcohol + CO2 + 2 ATP + heat
11 What organisms perform alcohol fermentation? YEAST – used to make bread & cakes and alcohol (beer, wine, etc.)
12 2. LACTIC ACID FERMENTATION produces lactic acid as a waste product.Formula:Glucose → lactic acid + carbon dioxide + 2ATPC6H12O6 → lactic acid + CO2 + 2 ATP
13 What organisms perform Lactic Acid fermentation? HUMANS – muscle cells perform it for quick, short term energy.BACTERIA - occurs in bacteria and is important in the dairy industry for the production of cheeses and yogurt.
14 Compare Aerobic to Anaerobic No Oxygen usedUses OxygenProduces 2 ATPProduces 36 ATPOccurs in theMitochondriaOccurs in the cytoplasmProduces Carbondioxideand waterProduces Carbon dioxideand Alcohol orCarbon dioxide andLactic acid