Ch. 8 Photosynthesis LM p. 41-42. ENERGY & LIFE Autotrophs get energy they need to produce food from the sun (or a light source) ATP stores energy for.

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Presentation transcript:

Ch. 8 Photosynthesis LM p

ENERGY & LIFE Autotrophs get energy they need to produce food from the sun (or a light source) ATP stores energy for cell activities like active transport & movement within the cell

PLANT EXPLORATION… Van Helmont: Plants need water to grow Priestley: Plants produce oxygen (O 2 ) Ingenhousz: Plants need light to produce oxygen (O 2 )

Plants are green because of the pigment ______________. (which absorbs light energy) CHLOROPHYLL green chlorophyllgreatly reducedpigmentsDuring the fall, the green chlorophyll pigments are greatly reduced revealing the other pigments. CarotenoidsredyellowCarotenoids are pigments that are either red or yellow.

Chloroplast Structures & Function: Locate the … 1.Thylakoids 2.Granum 3.Stoma 2 stages of photosynthesis: 1.Light-dependent reactions 2.Calvin Cycle (Light-independent)

Light Dependent Reactions Light absorbed by chlorophyll (in Thylakoids) ADP converted to ATP Convert NADP+ to NADPH (Electron Carriers) Produce Oxygen (O 2 ) gas

Calvin Cycle CO 2 enters from atmosphere Energy from ATP & NADPH used to convert 3-carbon molecule to higher energy Produces a single 6-carbon sugar molecule

Basic Process of Photosynthesis: H2OH2O CO 2 Light Dependent Reactions Calvin Cycle O2O2 Sugars CHRLORPLAST SunLIGHTSunLIGHT

Factors that affect the rate of Photosynthesis are… Availability of Water Temperature Intensity of Light Concentration of CO 2

World of Plants: Photosynthesis Video Notes & Quiz Clear your desk except for the video notes page & pencil/pen Answer each question while watching the short video clip on photosynthesis (There will be a video quiz at the end)

CH. 9 CELL RESPIRATION