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Published byDortha Andra McKinney Modified over 6 years ago
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Do now activity #1 How come animals do not need to do photosynthesis?
Where does photosynthesis happen in plant cells? What do plants produce from photosynthesis? What type of macromolecule do plants produce from photosynthesis?
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Section 3-1: Photosynthesis
Essential Question: What do plants use for photosynthesis? What do they make? Section 3-1: Photosynthesis Learning Target Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.
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announcements Biology Tutoring this week: Lunch B (Tuesday & Thursday)
7:00AM (Monday – Friday) After school Biology Tutoring: Thursday You must sign up for retakes during Biology Tutoring. 7:00AM retakes only.
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overview Photosynthesis -- plants convert sunlight into sugar
photo = light synthesis = to make
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Photosynthesis equation
light 6CO H2O C6H12O O2 carbon dioxide + water glucose + oxygen
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Photosynthesis equation
Photosynthesis the process that uses energy from sunlight to transform ________ _____________ and ________ into ___________ and ___________ Carbon dioxide, water, oxygen, carbohydrates
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Photosynthesis equation
Uses Light energy carbon dioxide (CO2) water (H2O) Makes oxygen (O2) glucose (C6H12O6)
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Stomata = “mouth”
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Light & pigments Plants have pigments
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Pigments: light absorbing molecules that capture the sun’s energy
Light & pigments Pigments: light absorbing molecules that capture the sun’s energy
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Light & pigments Pigments: light absorbing molecules that capture the sun’s energy We can see reflected light. We cannot see absorbed light.
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ROY G BIV Shortest wavelength = larger amount of energy
Longest wavelength = Least amount of energy Shortest wavelength = larger amount of energy
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Plants look green because chlorophyll reflects green light.
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Chlorophyll is a pigment found in __________
Light & pigments Chlorophyll is a pigment found in __________ plants
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Chlorophyll makes plants ________ .
Light & pigments Chlorophyll makes plants ________ . green
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Light & pigments 2 types: Chlorophyll a Chlorophyll b
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Light & pigments These pigments absorb red and blue light well.
They do not absorb _______ light very well. Pigments Include: chlorophyll a chlorophyll b absorbs well in red and blue but poorly in green plants also have red , yellow and orange pigments that absorb other colors energy is transferred to electrons in pigments when they absorb sunlight
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Is the color green being reflected or absorbed by plants?
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Photosynthesis takes place in the chloroplasts of plants
Inside a chloroplast Photosynthesis takes place in the chloroplasts of plants
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Inside a chloroplast Chloroplasts have two parts:
thylakoids: saclike membranes found in chloroplasts Many thylakoids = grana pigments capture sunlight (light-dependent reactions)
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Inside a chloroplast Chloroplasts have two parts:
Stroma: space surrounding the thylakoids (Calvin cycle)
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The chloroplast
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