Bio 93. Lecture 15 Cellular Respiration
If an enzyme is added to a chemical reaction what happens? - answer The energy of
activation will be reduced. Enzyme will reduce energy barrier, if there weren't enzymes,
it would occur automatically.
Mitochondria - answer site of cellular respiration in all eukaryotic cells. It produces ATP
Defects in mitochondrial function - answer degenerative diseases, cancer, aging,
muscle weakness, metabolic dysfunction.
Muscle cells use a lot of ATP, if you have a defect in mitochondria your muscles will be
weak.
Cellular respiration refers to?? - answer catabolic reactions (exergonic, energy releasing
process) used to generate ATP. It is the relocation of electrons from food to oxygen,
released energy is used to synthesize ATP (glucose in humans, sucrose in plants)
Redox Reactions have two components - answeroxidation and reduction.
Redux reactions - answerthe transfer of one or more electrons from one reactant to
another.
Oxidation - answerloss of electrons (increasing positive charge)
Reduction - answeraddition of electrons (reducing positive charge)
Redux equation for cellular respiration - answerNa+ CI ---> Na+ + CI-
in this case, Na is oxidized because it loose and electron, and CI- is reduced because it
gained an electron.
C6H12O6 + 6O2 ---> 6CO2 + 6H2O
glucose is oxidized, e- (and H+) removed
Oxygen is reduced e- (and H+) added, energy is released.
How is energy captured? - answerthrough controlled explosion in cellular respiration.
Cellular Respiration Controlled Explosion - answeroccurs in stages: An electron
transport chain breaks the "fall" of electrons in this reaction into a series of smaller steps
an stores some of the released energy in a form that can be used to make ATP (rest of
energy released as heat)
Going in: NADH, 2H+2e-, ATP produced, H20 comes out.
If an enzyme is added to a chemical reaction what happens? - answer The energy of
activation will be reduced. Enzyme will reduce energy barrier, if there weren't enzymes,
it would occur automatically.
Mitochondria - answer site of cellular respiration in all eukaryotic cells. It produces ATP
Defects in mitochondrial function - answer degenerative diseases, cancer, aging,
muscle weakness, metabolic dysfunction.
Muscle cells use a lot of ATP, if you have a defect in mitochondria your muscles will be
weak.
Cellular respiration refers to?? - answer catabolic reactions (exergonic, energy releasing
process) used to generate ATP. It is the relocation of electrons from food to oxygen,
released energy is used to synthesize ATP (glucose in humans, sucrose in plants)
Redox Reactions have two components - answeroxidation and reduction.
Redux reactions - answerthe transfer of one or more electrons from one reactant to
another.
Oxidation - answerloss of electrons (increasing positive charge)
Reduction - answeraddition of electrons (reducing positive charge)
Redux equation for cellular respiration - answerNa+ CI ---> Na+ + CI-
in this case, Na is oxidized because it loose and electron, and CI- is reduced because it
gained an electron.
C6H12O6 + 6O2 ---> 6CO2 + 6H2O
glucose is oxidized, e- (and H+) removed
Oxygen is reduced e- (and H+) added, energy is released.
How is energy captured? - answerthrough controlled explosion in cellular respiration.
Cellular Respiration Controlled Explosion - answeroccurs in stages: An electron
transport chain breaks the "fall" of electrons in this reaction into a series of smaller steps
an stores some of the released energy in a form that can be used to make ATP (rest of
energy released as heat)
Going in: NADH, 2H+2e-, ATP produced, H20 comes out.
