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Photosynthesi s

Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

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Page 1: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Photosynthesis

Page 2: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Energy Autotrophs

Use energy from sun to make their own food

Heterotrophs Cannot make their own

food, so they eat autotrophs or other heterotrophs for food.

Page 3: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

What is photosynthesis?

Plants take energy from the sun and store it as sugars

Page 4: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Equation for Photosynthesis

+ light energy

Page 5: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Light & Pigments Visible Spectrum

White light can be broken down into colors

Pigments Absorb certain colors of

light Reflect colors not

absorbed

Page 6: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Chloroplast Pigments Chlorophyll

Located in the THYLAKOID

Absorbs red and blue light and reflects green

Carotenoids

Accessory pigment for colors yellow, orange, & brown

Page 7: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Parts of Photosynthesis Light Reactions

Require light Occur in the THYLAKOIDTHYLAKOID

Dark Reactions Does not require light Occurs in the STROMASTROMA

Page 8: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Page 9: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Light Reactions

SunlightSunlight and WaterWater are used to make ATPATP and NADPHNADPH Sun excites electrons and

they go to a higher energy level

OXYGEN (OOXYGEN (O22)) is released

This provides fuel for the dark reactions

Page 10: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Page 11: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Page 12: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Dark Reactions…the Calvin Cycle Uses COCO22, ATPATP, and

NADPHNADPH to make PGALPGAL

PGAL is a building block to make glucose Carbohydrate sugar

Page 13: Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

12345 Organisms, such as plants, that make their own food are called 1.autotrophs. 2.heterotrophs. 3.thylakoids. 4.pigments

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