Tuesday 2/18 – Biology Warm-up 1.We must consume food in order to get energy. List what foods give us the most energy. Evolution Exam corrections due by Friday February 14th Learning Goal Understand the correlation between photosynthesis and cellular respiration, and describe how they meet the energy needs of both plants and animals Agenda Cellular Respiration Notes Photo vs. Respiration Fodable

+ Cellular Respiration Energy Unit

+ Cell Energy  Cells use ATP for energy.  ATP gives a cell energy to do work. P P P adenosine

+ ATP ATP supplies energy needed for cell repair ATP is the energy that drives metabolic reactions, like working out & digesting food

+ ATP ATP stores lots of energy in the bonds between the phosphate groups Energy is stored here adenosine PPP

+ ATP When the bond is BROKEN, LOTS of energy is released. adenosine PPP ENERGY

+ What is Cellular Respiration? Cellular respiration is a process that changes energy from food into energy for cells.

+ What is Cellular Respiration? Organisms take in glucose and oxygen and make energy (ATP) and release carbon dioxide and water.

+ Cellular respiration is aerobic because it needs oxygen. When cells need more energy, you have to breathe harder to bring in oxygen.

+ Label the reactants Label the products Cellular respiration

+ Cellular Respiration Word Equation +++ OxygenGlucose Carbon dioxide WaterEnergy 

+ Cellular Respiration Chemical Equation 6O 2 C 6 H 12 O 6 6CO 2 6H 2 OATP +++ 

+ Where does it happen? Starts in cytoplasm Finishes in the mitochondria

+ Cellular Respiration has 3 steps 1. Glycolysis 2. Krebs cycle 3. Electron transport chain

+ Step One: Glycolysis  Happens in the Cytoplasm  Glucose is split in half, releasing energy.  Energy from the broken bond makes  The two pieces of sugar move to the mitochondria to make MORE ATP.

+ Step Two: Kreb’s Cycle This happens in the mitochondria Oxygen is added to help break down the glucose pieces Energy from the broken bond makes 2

+ Step Three: Electron Transport Chain The energy from Glycolysis and the Kreb’s Cycle enters the Electron Transport Chain (ETC). The electron transport chain moves electrons down an electrochemical gradient to produce ATP. The Electron Transport Chain produces and water.