1. AP Biology - October 25th, 2011
SWBAT: Demonstrate knowledge of chapters 8, 9 and 10 on the unit test.
Warm Up:
·Get your pencil sharpened and hand back in your unit pretests, please!
2. Photosynthesis:
CO2 + H2O + light energy C6H12O6 + O2
O2
Cholorplast
Sugars
CO2 + H2O
Mitochondria
energy O2
Respiration:
C6H12O6 + O2 CO2 + H2O + energy (ATP)
3. Step 1 of 3: Glycolysis ("Glucose-breaking")
C6H12O6 enters the
cytoplasm 2 NADH + H are created. These skip step 2
and move directly to step 3.
Glycolysis
2 pyruvic acid are created. These
move to step 2.
4 ATP are created. . .
. . .2 of those ATP are released
. . .and 2 of those ATP are reused immediately
4. Steps 2 and 3: The Krebs Cycle and Electron Transport Chain
2 ATP
CO2
Oxygen
oxygen water
32 ATP
Step 2: Krebs Cycle
Step 3:
Electron Transport Chain
pyruvic acid from glycolysis
NADH + H and
FADH2
NADH + H from glycolysis made for ETC
5. Photosynthesis:
CO2 + H2O + light energy --> C6H12O6 + O2
Oxygen is made Carbon dioxide is used
to make glucose
Solar energy starts the process of
exciting electrons and moving
energy ATP is made for step 2
NADPH+H is made for step 2
STEP 1: STEP 2: Light-Independent Reactions
Light Dependent Reactions (Calvin Cycle)
WATER is a reactant because it donates
an electron (energy)
Glucose is MADE using ATP, NADPH+H,
Carbon dioxide, and a molecule called
RuBP
6. Chapter Test: 8, 9, 10
Know how to compare and contrast several processes, places, and pathways:
·Catabolic vs. anabolic pathways
·Exergonic vs. endergonic reactions
·Allosteric inhibition vs. activation
·Cellular respiration vs. photosynthesis
·Mitochondria vs. Chloroplast
·Krebs Cycle vs. Calvin Cycle
·Noncyclic vs. Cyclic Electron Flow
·CAM vs. C4 vs. C3 plants
·Substrate-level vs. Oxidative phosphorylation
·Photorespiration vs. Photosynthesis
·Aerobic vs. Anaerobic Respiration
7. Cyclic Vs. Noncyclic (Light Rxs of Photosynthesis)
Noncyclic = normal -- creates ATP, NADPH and oxygen
Longer process - uses Photosystem 2, then photosystem 1
Cyclic kicks in when Calvin Cycle needs more ATP to proceed
Uses photosystem 1 only and makes ONLY ATP
Does NOT make NADPH
Substrate-Level Vs. Oxidative Phosphorylation
9. CAM - stomata/night vs day action
C4 - mesophyll vs. bundle sheaths - cellular separation of photosynthesis (carbon fixation in
two different types of cells)
CAM and C4 are used to minimize photorespiration
Carbon dioxide is no longer brought in because of high levels of oxygen -- Rubisco can pick up
either carbon dioxide or oxygen as a substrate
--------------------------------------------------------------------------
C3 - normal photosynthesis
10. Two Types of Cell Resp: Anaerobic Vs. Aerobic
NORMAL (for humans) = aerobic
We are facultative anaerobes - we go in to anaerobic (fermentation) when we don't
get enough oxygen to proceed with kreb's/ETC
Lactic acid formation (fermentation) occurs so ATP can be created, NADH gets cycled
back to NAD+. ATP is made via substrate-level phosphorylation.
Obligate anaerobes normal = anaerobic
