Hmmmm… When a consumer eats what are they getting? What do organisms use matter and energy for?(online 7.1 activity) How is putting chemical energy to work in a cell different than in an auto? How is the burning of a marshmallow different from eating the marshmallow? (online 7.2 activity) How is cellular respiration different from digestion? Cellular Respiration: The chemical process by which organisms use oxygen to convert the chemical energy stored in glucose into another form of chemical energy called ATP. ATP is then used to do cellular work(transport, mechanical, or chemical work)

Chapter 7 Cellular Respiration Balanced Chemical Equation: __________________________________ Reactants are: ____________________ Products are: _____________________ Three stages are:

Stage 1: Glycolysis Does not require ___________ Occurs in _____________________ of cell Net gain of ______________

Stage 2: Kreb’s Cycle CytoplasmMitochondria Conversion of two pyruvic acid molecules to two acetyl CoA molecules yields: ___ CO 2 and ___ NADH

Kreb’s Cycle Yield per acetyl CoA ___ carbon atoms added from acetyl CoA ___ carbon atoms removed as ______ ___ NAD + converted to _____ NADH ___ FAD converted to ____ FADH 2 ___ ADP converted to ___ ATP X 2 for each acetyl CoA is a result of ___ NADH, ___ FADH 2, and ___ ATP

Stage 3: ETC and ATP Synthase

ETC and ATP Synthase 1.Electrons from NADH and FADH 2 pass along ETC (series of molecules) 2.Some energy from electrons used to power pump that moves H + out of inner mitochondria membrane (active transport) 3.Oxygen accepts pair of electrons at end of ETC, combines with 2H +, creating water 4.H + diffuse (passive transport) through ATP synthase into mitochondria 5.ATP synthase generates ATP, ADP + P  ATP **How many ATP molecules are made from one glucose molecule?

Glucose 2 G3P ATP Production per Molecule of Glucose Gross ___ ATP Net ___ ATP ~63% of energy in glucose molecule lost as heat