Group 4 photosyntheis Presentation-MSP
Post on 27-Jun-2015
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PHOTOSYNTHESIS
GROUP 4
Light Energy and Plants
Learning Objectives• By the end of this lesson, students should be able to: -explain that the process of photosynthesis
converts light energy to chemical energy. - explain that the sun is the original energy source
for most life on earth. -identify the reactants and products of
photosynthesis. -explain which reactions in photosynthesis are light
dependent which are light independent. -explain why many plants appear green to us here
on earth. Return to TOC
Presenters John: Explain that the sun is the original energy source for
most life on earth and the basics components needed for photosynthesis. Share short Discovery Education video on photosynthesis.
Monique: Explain that the process of photosynthesis converts light energy to chemical energy. Share the Nova Illuminating Photosynthesis resource.
Terence: Identify the reactants and products of photosynthesis, and explain which reactions in photosynthesis are light dependent which are light independent. Share the resource Teach Engineering.
Michelle: Explain why many plants appear green to us here on earth. Share the resource Biology 4 Kids.
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What is the process of photosynthesis?• Photosynthesis converts light energy into chemical energy.• Photosynthesis provides the energy needed by most plants,
animals, and other living things.
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The Process of Photosynthesis
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The Process of Photosynthesis The process of photosynthesis converts light energy to chemical
energy.
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Nova Illuminating Photosynthesis
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Light Dependent and Independent Reactions in Photosynthesis
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Light Dependent Reactions:
Light Independent Reactions: The Calvin Cycle
Light Dependent Reactions:
Light Independent Reactions: The Calvin Cycle
Light Dependent and Independent Reactions in Photosynthesis
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Different wavelengths of visible light are seen by the human eye as different colors.
WHYWHY ARE ARE PLA PLANTS NTS GREGREEN?EN?
Gammarays
X-rays UV Infrared
Micro-waves
Radiowaves
Visible light
Wavelength (nm)
Why are plants green?
Reflected
light
Transmitted light
Sunlight minus absorbed Sunlight minus absorbed wavelengths or colors wavelengths or colors equals the apparent equals the apparent color of an object.color of an object.
• The green color comes from chlorophyll in the chloroplasts
• Chloroplasts absorb light energy and convert it to chemical energy
LightReflected
light
Absorbedlight
Transmittedlight
Chloroplast
THE COLOR OF LIGHT SEEN IS THE COLOR NOT ABSORBED
• Photosynthesis is the process by which autotrophic organisms use light energy to make sugar and oxygen gas from carbon dioxide and water
AN OVERVIEW OF PHOTOSYNTHESIS
Carbondioxide
Water Glucose Oxygengas
PHOTOSYNTHESIS
Photosynthesis
• Occurs in chloroplasts• The green color comes from
chlorophyll in the chloroplasts• Chlorophyll is the green pigment
that captures light for photosynthesis
• The pigments absorb light energy and create sugar and oxygen
Resources and References• Google Images of Photosynthesis• Nova Illuminating Photosynthesis• Teach Engineering• Biology 4 Kids
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Photosynthesis Quiz
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1. The process of photosynthesis convertsa. Nutrients into cell growthb. Cell mass into plant structurec. Light energy into chemical energyd. Plant cells into animal cells
Photosynthesis Quiz
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2. The origin of energy for most life on earth isa. Carbon, oxygen, and waterb. Natural light from the sunc. The Earth’s cored. The atom
Photosynthesis Quiz
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3. What are the reactants and products of photosynthesis?
a. Oxygen and water; carbon dioxide and sugarsb. Sugars and oxygen; water and carbon dioxidec. Carbon dioxide and water; sugar and oxygen
Photosynthesis Quiz
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4. The process of photosynthesis is divided into two main parts. What is the order of the process?
a. Light independent reaction and light dependent reactionb. Light dependent reaction and light independent reactionc. Both of the aboved. None of the above
Photosynthesis Quiz
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5. Plants appear green to the human eye due toa. Reflection of green lightb. The processing of chloroplastc. Absorption of pure lightd. The processing of chlorophyll
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