Bio Test 2 Notes

Ch 6 – Cellular Respiration

 ATP

o All Plants and animals use it

o No cell can survive without a steady supply

o Powers nearly every activity that requires energy

 Synthesis of DNA/RNA/Proteins

 Active transport across gradient

 Separation of chromosomes

 Muscle Contraction

o Cells don’t produce ATP the same way

 Aerobic Cellular Respiration

 Use oxygen and glucose to generate ATP

 Fermentation



o Aerobic Cellular Respiration

 C6H12O6 + 6O2 6CO2 + 6H2O + 36ATP

 Glucose + OxygenCarbon Dioxide + Water + ATP

 Reverse of photosynthesis

 Cell Respiration

o Cell Respiration releases energy from glucose in 3 steps

 Glycolysis

 Krebs Cycle

 Electron Transport Chain

o Location of Cell Respiration

 Glycolysis

 Occurs outside mitochondria in the cell cytoplasm

 Krebs Cycle

 Occurs in the mitochondrial matrix

 Electron Transport Chain

 Occurs in the inner membrane of the mitochondria

o Mitochondria Structure

 Outer and inner membrane

 Phospholipid bilayer

 Inner Membrane compartment

 Inside outer membrane but still outside inner membrane

 In between membranes

 Inner membrane has enzymes and membrane proteins

 Matrix is compartment inside inner membrane

 Where the Krebs Cycle takes place

 Glycolysis

o Outside the mitochondria in the cell cytoplasm

o Splits Glucose

o Requires two ATP to activate the splitting of the glucose

o Pyruvate

 One glucose gets split into 2 pyruvate