Bio 103 Chapter 7: Cellular Respiration

Phases of Cellular Respiration

1. Glycolysis

2. Preparatory Reaction

3. Citric Acid Cycle

4. Electron Transport Chain

Glycolysis-location, reactants, products, what is oxidized and reduced?

1. takes place in the cytoplasm

2. 6-carbon glucose goes in, 2 3-carbon pyruvates come out

3. glucose is oxidized; NAD+ is reduced to NADH

4. Products: 2 NADH, 2 ATP

Preparatory Reaction-location, reactants, products, what is oxidized and reduced?

1. takes place in the matrix of mitochondria

2. 2 3-carbon pyruvates go in

3. NAD+ is reduced to NADH

4. Products: 2 Acetyl CoA, 2 NADH, 2 CO2

Citric Acid Cycle

1. matrix of the mitochondria

2. 2 Acetyl CoA's go in

3. NAD+ reduced to NADH, FAD reduced to FADH2

4. Products: 6 NADH, 2 FADH2, 4 CO2, 2 ATP

Electron Transport Chain

1. inner membrane of mitochondria

2. NADH, FADH2, O2, H+ go in

3. NADH reduced to NAD+, FADH2 reduced to FAD, O2 & H+ produce water

4. 32 ATP produced through chemiosmosis

ATP synthase

special protein that H+ ions flow through in the electron transport chain to produce ATP

Chemiosmosis

process in which H+ flows through ATP synthase and produces ATP

what is the role of FAD and NAD

temporarily store energy to generate ATP

Can coenzymes be recycled?

yes

final electron acceptor of ETC

Oxygen

what stage of cellular respiration does not produce ATP

prep reaction

oxidation

loss of electrons

reduction

gain of electrons

fermentation

occurs when oxygen is not present in the cell

product of fermentation in animal cells

lactic acid

product of fermentation in plant cells

CO2 and ethanol