This document provides an overview of photosynthesis and includes learning objectives, presenters, and content about the topic. It explains that photosynthesis converts light energy to chemical energy, identifies the reactants and products, and notes that the sun is the original energy source for most life on Earth. It also explains that plants appear green because chlorophyll in chloroplasts absorbs all colors of light except green.
2. 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.
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3. 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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4. 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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11. Different wavelengths of visible light are seen
by the human eye as different colors.
WHYWHY AREARE PLAPLANTSNTS GREGREEN?EN?
Gamma
rays
X-rays UV Infrare
d
Micro-
waves
Radio
waves
Visible light
Wavelength (nm)
12. Why are plants green?
Reflected
light
Transmitted light
Sunlight minus absorbedSunlight minus absorbed
wavelengths or colorswavelengths or colors
equals the apparent color ofequals the apparent color of
an object.an object.
13. The green color
comes from
chlorophyll in the
chloroplasts
Chloroplasts absorb
light energy and
convert it to
chemical energy
Light
Reflected
light
Absorbed
light
Transmitted
light
Chloroplast
THE COLOR OF LIGHT SEEN IS THE
COLOR NOT ABSORBED
14. 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
Carbon
dioxide
Water Glucose Oxygen
gas
PHOTOSYNTHESIS
15. 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
17. Resources and References
Google Images of Photosynthesis
Nova Illuminating Photosynthesis
Teach Engineering
Biology 4 Kids
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18. Photosynthesis Quiz
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1. The process of photosynthesis converts
a. Nutrients into cell growth
b. Cell mass into plant structure
c. Light energy into chemical energy
d. Plant cells into animal cells
19. Photosynthesis Quiz
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2. The origin of energy for most life on earth is
a. Carbon, oxygen, and water
b. Natural light from the sun
c. The Earths core
d. The atom
20. Photosynthesis Quiz
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3. What are the reactants and products of
photosynthesis?
a. Oxygen and water; carbon
dioxide and sugars
b. Sugars and oxygen; water and
carbon dioxide
c. Carbon dioxide and water; sugar
and oxygen
21. 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
reaction
b. Light dependent reaction and light independent
reaction
c. Both of the above
d. None of the above
22. Photosynthesis Quiz
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5. Plants appear green to the human eye due to
a. Reflection of green light
b. The processing of chloroplast
c. Absorption of pure light
d. The processing of chlorophyll