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Photosynthesis and Cellular Respiration

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Photosynthesis and Cellular Respiration. Copied book chapters 7 and 8. Dirt, bugs, NaCl not needed in photosynthesis. 2xNwZCk2CHY. 6 CO 2 + 6 H 2 O 6 O 2 + C 6 H 12 O 6. What is photosynthesis?. “when plants use sunlight to make energy” - PowerPoint PPT Presentation

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Photosynthesis and Cellular RespirationCopied book chapters 7 and 8Dirt, bugs, NaCl not needed in photosynthesis

6 CO2 + 6 H2O 6 O2 + C6H12O6

What is photosynthesis?when plants use sunlight to make energyIs the plant making energy? NO it is being transformed, changed, altered

How can a plant take light and change it into something else?

Remembering types of energy(7.2)Kinetic energy of movementDirected or randomPotential stored energyPosition or bondsWhat are bonds made of?Electrons! Which are small, negatively charged particles around every atom that can be energized

How can a plant take light and change it into something else?(8.1)Where: Chloroplast at the chlorophyll moleculePhotosystem: a group of pigments that collect energy for one electronAll of your friends giving you info on a cheating boyfriendTwo part process- Light Dependent reaction and Light INdependent reactionThe Light Dependent ReactionElectrons get excited (replaced by water)Moves hydrogen across a membrane forming a concentration gradient

Bonds NADP with H to make NADPHSquished hydrogens move and make ADP bond with P to make ATP

Light Dependent Reaction Vocab: Electron-Concentration gradient-Hydrogen-Membrane-NADP and NADPH-ADP and ATP (7.3)-

Adenosine TRI or DI phosphate(7.3)A molecule that is very good at storing energyCan have up to three P groups attachedUsually two then three then two then three

Where are we?How can a plant take light and change it into something else?-Light made NADPH and ATP-water was broken to get electrons and Hs and, oxygen got released

Next step is to make those into sugarLight INdependent ReactionCO2 meets with a big carbon molecule already thereATP and NADPH are used to rearrange the CO2 and old carbon molecule into GlucoseSome glucose stays in the cycle while the rest can be used to build the plant and eaten for energy to divide cells and absorb nutrients

Light Independent Reaction Vocab:Glucose-CO2-Calvin Cycle-

So now where are we?The light independent reaction uses CO2, ATP and NADPH to make GlucoseThe whole story: chlorophyll traps light energy by exciting electrons. Those electrons help make NADPH and ATP needed in the light independent reaction. There, CO2 is rearranged to make glucose.Now that the plant has trapped sunlight in bonds of glucose, how does it use the glucose? How do animals use glucose?

Cellular RespirationThree Parts:GlycolysisKrebs CycleElectron Transport

Glycolysis (p149)Activation energy (ATP) is added to glucose breaking it into two molecules called pyruvic acidWith help from a protein (Acetyl CoA), pyruvic acid loses a carbon (CO2) and gets inside the inner part of the mitochondria.It joins with a big carbon molecule and goes into the Krebs Cycle

Glycolysis Vocab:Activation Energy-Pyruvic acid-

Krebs Cycle (p150)The broken down glucose/pyruvic acid joins enters.As CO2 is broken off, ADP and P bond to make ATP.FAD and H and H become FADH2 and NAD and H become NADH

Krebs Cycle Vocab:FAD and H and H-NAD and H-

Electron Transport Chain (p151)NADH and FADH2 carry excited electrons and hydrogens to the membrane where they are pushed through making a gradient.As the hydrogen comes back, A LOT of ATP is made

Electron Transport Chain Vocab:NADH and FADH2-Gradient-