This Week: Digestion and Nutrition Next Week: Plants are Cool 5/2 Exam 3 4/27 bonus 3 4/30 homework 4 (12 pts max)
The Digestive System CB 41.15
Photosynthesis Cellular Respiration CO2 + H2O C6H1206 + O2 CO2 + H2O light Photosynthesis CO2 + H2O C6H1206 + O2 sugar Cellular Respiration CO2 + H2O C6H1206 + O2 sugar energy ADP ATP
Cells store energy in ATP Energy released Energy used
Complex molecules are broken down and then used to build needed molecules and to produce energy
breaking large molecules into small molecules Physical digestion: liquefying of food Chemical digestion: breaking large molecules into small molecules CB 41.21
Carnivores have a short digestive system Herbivores have a long digestive system CB 41.27
CB 6.9
Carbohydrates- rings of carbon with oxygen CB 5.7 Carbohydrates- rings of carbon with oxygen
CB 5.8 Carb’s- provide energy and structural support
CB 41.28 Ruminants can release sugar from cellulose by the action of methanogens that live in their gut.
Cells store energy in ATP Energy released Energy used
Energy can be transferred but not created or destroyed. Thermodynamics Energy can be transferred but not created or destroyed. CB 8.3
Energy transfer CB 9.2
Cellular respiraton occurs in mitochondria CB 6.17
CB 9.19 Cellular Respiration
CB 9.19 Cellular Respiration
Membranes are critical for ATP production CB 7.7 Membranes are critical for ATP production
CB 7.17 Membrane transport pump channel
Diffusion: Movement from high to low concentration CB 7.11 Diffusion: Movement from high to low concentration
CB 9.19 Cellular Respiration
protons neutrons electrons CB 2.4 Atoms are made of: protons neutrons electrons
H2O OH- H+ _ _ acid base Water is not always water CB 3.8 O H H O H H
[H+] Electron transport pumps H+ ions across membrane CB 9.15 [H+] oxygen accepts electron
CB 9.14 The diffusion of hydrogen ions through ATP synthase creates ATP from ADP and P http://youtube.com/watch?v=U2kIatxYrws
Complex molecules are broken down and then used to build needed molecules and to produce energy