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!

CO2 + H2OSugars

Cholorplast

Mitochondria

O2

energy O2

Photosynthesis:CO2 + H2O + light energy C6H12O6 + O2

Respiration: C6H12O6 + O2 CO2 + H2O + energy (ATP)

Step 1 of 3: Glycolysis ("Glucose-breaking")

Glycolysis

C6H12O6 enters the cytoplasm

4 ATP are created. . .

2 NADH + H are created. These skip step 2 and move directly to step 3.

2 pyruvic acid are created. These move to step 2.

. . .2 of those ATP are released

. . .and 2 of those ATP are reused immediately

Steps 2 and 3: The Krebs Cycle and Electron Transport Chain

Step 2: Krebs Cycle

Step 3: Electron Transport Chain

NADH + H from glycolysis made for ETC

oxygen

pyruvic acid from glycolysis

NADH + H and FADH2

Oxygen

water

2 ATP

32 ATP

CO2

Photosynthesis:CO2 + H2O + light energy --> C6H12O6 + O2

STEP 1:Light Dependent Reactions

STEP 2: Light-Independent Reactions (Calvin Cycle)

WATER is a reactant because it donates an electron (energy)

Solar energy starts the process of exciting electrons and moving energy ATP is made for step 2

NADPH+H is made for step 2

Oxygen is made Carbon dioxide is used to make glucose

Glucose is MADE using ATP, NADPH+H, Carbon dioxide, and a

molecule called RuBP

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

Cyclic Vs. Noncyclic (Light Rxs of Photosynthesis)

Noncyclic = normal -- creates ATP, NADPH and oxygenLonger process - uses Photosystem 2, then photosystem 1

Cyclic kicks in when Calvin Cycle needs more ATP to proceedUses photosystem 1 only and makes ONLY ATPDoes NOT make NADPH

Substrate-Level Vs. Oxidative Phosphorylation

Cellular Respiration

(Fermentation)

Photosynthesis

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 photorespirationCarbon 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

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/ETCLactic 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