6.1Photosynthesis and cellular respiration provide energy for life
A.Cellular respiration is the aerobic harvesting of energy from sugar by muscle cells.
B.Cellular respiration and photosynthesis work together to provide energy.
6.2Breathing supplies oxygen to our cells and removes carbon dioxide
A.An organism obtains oxygen from its environment and releases carbon dioxide as waste.
B.Breathing and cellular respiration are closely related, but not the same.
6.3 Cellular respiration banks energy in ATP molecules
A.Cellular respiration generates ATP, which is the primary function. B.Glucose releases chemical bond energy, which the cell stores in the chemical bonds of ATP.
6.4 The human body uses energy from ATP for all its activities
A.Cells in our body need a continuous supply of energy in order to stay alive.
B. During cellular respiration ATP made, which provides energy for voluntary activities.
6.5Cells tap energy from electrons "falling" from organic fuels to oxygen
A.The energy available to a cell is contained in the arrangement of electrons in the chemical bonds that hold an organic molecule together.
B.An electron loses potential energy when it "falls" to oxygen because oxygen attracts electrons very strongly.
C.Redox reaction is when electrons move from one molecule to another.
D.Oxidation is the loss of electrons.
E.Reduction is the addition of electrons.
F.Dehydrogenase is an enzyme that catalyzes a chemical reaction when hydrogen atoms are removed from a molecule.
G.NAD is an organic molecule that cells make from the vitamin niacin and use to shuttle lecterns in redox reactions.
H.Electron transport chain is NAHD delivering these electrons to the rest of the steps.
6.6Overview: Cellular respiration occurs in three main stages
A.Stage 1: Glycolysis begins respiration...