8.2 PHOTOSYNTHESIS
WHAT YOU WILL LEARN-the two phases of photosynthesis [ describe / diagram ]-the role structures in chloroplast play in photosynthesis-factors that can affect the rate of photosynthesis
MAIN IDEA
-LIGHT energy CHEMICAL energy-plants absorb LIGHT ENERGY from the SUN to create GLUCOSE- CHEMCIAL ENERGY
SONG- PHOTOSYNTHESIS RAPhttps://www.youtube.com/watch?v=afFIEyVGnCQ
8.2 READ Qs1-IDENTIFY two ways cells can use glucose
2- NAME: Check the organism that has chloroplasts
Mushroom oak tree earthworm
-Also occurs in bacteria, algae, protists-
-build complex sugars, carbohydrates, proteins, lipids-energy
WATCH:https://www.youtube.com/watch?v=g78utcLQrJ4
8.2 READ Qs3- ILLUSTRATE/LABEL - thylakoid, granum, stroma
8.2 READ Qs4- EXPLAIN why the leaves of some trees change color in the fall
-in the fall plants break down their chlorophyll—the other pigments of the leaf can then be seen
8.2 READ Qs5-DESCRIBE what photosystem I & II are made of
- light-absorbing pigments & proteins
8.2 READ Qs6-IDENTIFY: Highlight on the diagram the path electrons follow-CIRCLE: What molecule is the electron’s final destination __________________________- NADPH
8.2 VOC
-chloroplasts
-thylakoid
-grana
-stroma
-pigment
-Calvin cycle
PROVIDE SUPPORTING EVIDENCE:Infer why chloroplasts are found mostly in the leaves of plants.a. The large surface area of leaves allows for maximum light absorption.b. The waxy coating on the surface of leaves helps prevent evaporation.c. Chlorophyll interferes with the xylem and phloem in the stems and trunks of plants.d. The large surface area of leaves allows for contact with oxygen. -________________________________________ -________________________________________ -________________________________________
- Light is absorbed by the chloroplasts in
plant cells
-Large surface area provides more exposure
of cells
PHASE ONE / PHASE TWO - DIAGRAM
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8.2 PHOTOSYNTHESIS
WHAT YOU WILL LEARN-the two phases of photosynthesis [ describe / diagram ]-the role structures in chloroplast play in photosynthesis-factors that can affect the rate of photosynthesis
MAIN IDEA
-LIGHT energy CHEMICAL energy-plants absorb LIGHT ENERGY from the SUN to create GLUCOSE- CHEMCIAL ENERGY
SONG- PHOTOSYNTHESIS RAPhttps://www.youtube.com/watch?v=afFIEyVGnCQ
OVERVIEW OF PHOTOSYNTHESISLIST organisms that carry out photosynthesis-autotrophs (plants) LIST the organelle where photosynthesis takes place
-chloroplast 1st-thylakoid / 2nd-stromaIDENTIFY the chemical equation for photosynthesis:__________ + __________ __________ + ___________
[REACTANTS] light [PRODUCTS] IDENTIFY the energy form used during photosynthesis
chemcial light
IDENTIFY the energy form produced during photosynthesis chemcial light
6CO2 6H2O 6O2 C6H12O6
-INTERNAL STRUCTURE: leaf tissue
CHLOROPLAST
IMPORTANT STRUCTURES
IMPORTANT STRUCTURES- CHLOROPLAST
CHLOROPLAST-located in the cell of leaves
INNER/OUTER MEMBRANE -phospholipid bilayer -carbs transported across membrane
THYLAKOIDS - “coins” -phase I GRANUM- “stack of coins”
STROMA- fluid/space -phase II
IMPORTANT STRUCTURES- CHLOROPLAST
MAIN IDEA
Open Closed
STOMATA-openings in leaf allow exchange of water/gasesGUARD CELLS-open & close stomata by changing shapePhotosynthesis Animation
IMPORTANT STRUCTURES- CHLOROPLAST
IMPORTANT STRUCTURES- PIGMENTSPIGMENTS-absorb colored light-found in thylakoids of chloroplast
CHLOROPHYLL-major light-absorbing pigment in plants
-gathers sunlight-absorbs light in all wavelengths [violet-blue]
-EXCEPT GREEN / Reflects GREEN
PHASE ONE: LIGHT REACTIONS
PHASE I-
NAME:
OCCURS IN:
STARTS WITH:
PRODUCES:
light-dependent <PHOTO>
Light Reactions
thylakoids
light energy-SUNwater
-oxygen-H+
-ATP / NADPH [energy storing molecules]
PHASE ONE: LIGHT REACTIONS-sunlight splits water molecules -H2O
-excites electrons ~ e- gain ENERGY-releases oxygen gas -O2 [waste product]
-H+ (protons) needed to make food
ELECTRON TRANSPORT CHAIN-thylakoid membrane
PHOTOSYSTEM II (protein)ELECTRON CARRIER- NADP+
-accepts/transports high energy e-
-convert ADP and NADP+ energy carriers ATP and NADPH
PHOTOSYSTEM I (protein)
ELECTRON TRANSPORT CHAIN
photosystem II
photosystem I
PHASE TWO: CALVIN CYCLE
PHASE 2-
NAME:
OCCURS IN:
STARTS WITH:
PRODUCES:
light-independent <SYNTHESIS>CALVIN CYCLE
stroma
-CO2
-ATP / NADPH [energy molecules]-GLUCOSE [6 carbon sugar]-ADP / NADP+ [return to light-dependent phase]
PHASE ONE / PHASE TWO - DIAGRAM
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OVERVIEW OF PHOTOSYNTHESIS
FACTORS THAT AFFECT THE RATE OF PHOTOSYNTHESIS
1-WATER
2-LIGHT INTENSITY
3-CO2 CONCENTRATION
4-TEMPERATURE
5-COLOR of LIGHT