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Photosynthesis
SWBAT explain how photosynthesis
changes light energy into chemical
energy; describe photosynthesis,
naming the reactants and the products
Photosynthesis

Photosynthesis
– The process that most producer organisms use to
change light energy into chemical energy

What does photosynthesis require?
– Carbon dioxide, water, and light energy

What does it produce?
– Sugar and oxygen

What must be present for photosynthesis to
occur?
– Special pigments (chlorophyll), organelles
(chloroplasts), and enzymes
Quick Review

What is potential energy?
– Stored energy due to an objects position

What is kinetic energy?
– Energy due to motion

How is light energy kinetic energy?
– Its motion is harnessed by the plant

How is sugar potential energy?
– It can be broken down to produce energy
Pigments Absorb Light Energy

Pigments
– Colored substances that absorb light

Chlorophyll
– A green pigment, and the primary pigment for
photosynthesis

What organelle does photosynthesis occur
in?
– Chloroplasts
Using Energy

How do plants make proteins, lipids, and
nucleic acids?
– The use the energy stored from
photosynthesis to produce these items.