DO NOW What does photosynthesis produce? Why are the products important? Where do the ingredients needed for photosynthesis come from?

Harvesting Chemical Energy ATP Cellular Respiration Harvesting Chemical Energy ATP

Cellular Respiration Cellular Respiration Biochemical process that releases the chemical energy stored in glucose and stores the energy in ATP. Occurs in the mitochondria! The energy released from glucose is temporarily stored in the bonds of ATP. This energy is used for all life functions in all organisms.

Photosynthesis allows respiration to occur CO2 + H20 + light  C6H12O6 + O2 How does photosynthesis allow respiration to occur? The products of photosynthesis allow respiration to happen! Photosynthesis gives organisms: Glucose (stored energy) Oxygen (helps release stored energy)  Products Reactants

Photosynthesis and Respiration Both rely on each other Photosynthesis stores the Sun’s energy in glucose and releases oxygen as waste. BOTH plants and animals (including us) use glucose and oxygen for cellular respiration! Photosynthesis uses the products of respiration! Respiration uses the products of photosynthesis!

Complete the Photosynthesis and Cellular Respiration Diagram

Respiration Equation Respiration (oxygen present): Photosynthesis? Glucose + Oxygen  ATP + Carbon Dioxide + Water C6H12O6 + O2  ATP + CO2 + H2O Photosynthesis? Carbon Dioxide + Water + Light  Glucose + Oxygen

Compare and Contrast Cellular Respiration and Photosynthesis Function/purpose What’s needed? What’s produced? Cell organelle Which organisms carry it out? Equation

AIM: What are the two types of cellular respiration? DO NOW: ***complete in “EXTRA WORKSPACE” 1. Where do organic food molecules, such as glucose, with stored energy come from? 2. Where does cellular respiration take place in a cell? 3. Why is cellular respiration necessary to sustain life? 4. What is the equation for cellular respiration?

Regents Questions

Two Forms of Cellular Respiration 1. Aerobic Respiration: Synthesizing energy WITH oxygen 2. Anaerobic Respiration: Synthesizing energy WITHOUT oxygen What is the purpose of cellular respiration? Which type of cellular respiration do you think is more efficient?

What is the purpose of cellular respiration What is the purpose of cellular respiration? --- To create energy for life functions Which type of cellular respiration do you think is more efficient? --- Aerobic respiration creates more ATP (energy) because of oxygen

Aerobic Respiration Form of cellular respiration carried out by cells in the presence of oxygen. Occurs in mitochondria Purpose is to release the energy stored in organic molecules and form ATP (ready-to-use energy) Uses Oxygen to release the maximum amount of energy stored in organic food For this reason, aerobic respiration is much more efficient at making ATP than anaerobic respiration. Equation: Glucose + Oxygen  36ATP + Carbon Dioxide + Water

Anaerobic Cellular Respiration Form of cellular respiration carried out by cells in the absence of oxygen. Occurs in cell mitochondria Purpose is to release the energy stored in organic molecules and form ATP (ready-to-use energy) Used by certain bacteria and yeasts (fungi) Humans also use anaerobic cellular respiration Process used to make cheese, yogurt, baked goods, brewed goods and wines. Two types of anaerobic cellular respiration

Anaerobic Respiration 1. Alcohol fermentation Type of anaerobic respiration where ethyl alcohol is produced as a product Glucose  2ATP + Carbon Dioxide + Ethyl alcohol -Certain fungi (yeasts) perform this… giving us beer and wine Without mitochondria and anaerobic respiration… there would be no alcohol.

Anaerobic Respiration 2. Lactic Acid formation Type of anaerobic respiration which produces lactic acid as one of its products Glucose  2ATP + Carbon Dioxide + lactic acid In humans, during strenuous exercise, not enough oxygen is present in the blood (oxygen debt) Lactic acid accumulates in muscles; leads to fatigue and pain

Disclaimer Both types of anaerobic respiration are considered inefficient. The end products of both (ethyl alcohol and lactic acid) contain lots of energy that has not been effectively released for use by the cell.

Anaerobic Respiration Compare and Contrast Aerobic Respiration Same Anaerobic Respiration