Comparing Photosynthesis and Cellular Respiration Flashcards
Mitochondria Reactants
- Glucose
- O2
Chloroplasts Reactants
- H2O
- CO2
- Light
Mitochondria Products
- H2O
- CO2
- ATP
Chloroplast Products
- Glucose
- O2
Mitochondria - Summary of Pathway
- Glucose is broken down into two 3C molecules and then into 6CO2
- ATP is produced
- Water is released
Chloroplast - Summary of Pathway
- Sunlight is used to produce ATP and NADPH which are turned into a 3C intermediate
- 3C intermediates are converted into carbohydrates
Mitochondria - Origin of energy
From oxidation of macromolecule food molecules (carbs, fats, proteins)
Chloroplast - Origin of energy
From light captured by photosystems which trap energy in the form of ATP and NADPH
Mitochondria - H+ movement
- Pumped from the matrix into the intermembrane space
Chloroplast - H+ movement
Pumped from the stroma to the lumen
Mitochondria - Site of ATP Formation
In the matrix
Chloroplast - Site of ATP Formation
In the stroma
Mitochondria - End product of ETC’s
- H2O
- NAD+’s
- FAD’s
Chloroplast - End product of ETC’s
- NADPH
- O2
Mitochondria - Electron donor
- NADH
- FADH2
Chloroplast - Electron donor
- H2O
- Mg
Similarities in Photosynthesis and Cellular Respiration
- Have ETC’s with progressively more electronegative carriers
- Use proton gradients
- Have ATPase that uses H’s to create ATP
- Similar electron carriers such as quinones and cytochromes
- ATP synthase complexes are similar
Mitochondria - Structural Comparisons
- Double membranes
- Smooth outer membrane and highly folded inner membrane
- Have cristae
- Kreb’s cycle occur in matrix
What are cristae?
Protein rich sites of electron transport and chemiosmosis
Chloroplast - Structural Comparisons
- Smooth inner and outer membranes
- Organized membrane-bound sacs arranged in stacks
- Thylakoid membranes are enzyme and protein rich
- Stroma within inner membrane
- Intermembranous space between two membrane layers
