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Photosynthesis
Photosynthesis is the process by which green plants manufacture food.
A. Sunlight
provides the energy
B. Carbon dioxide
in the air
Sunlight
Chlorophyll
absorbs sunlight
energy; some in
stored in the
compound ATP
E. Oxygen
waste product of
photosynthesis
Energy is
released to split
water molecule
C. Chloroplasts
in cells of leaf
H + CO2
D. Water
from the ground
Hydrogen can
combine with
carbon dioxide
Simple sugars
(glucose) are
formed
General Formula for Photosynthesis
(in the presence of light energy)
6CO2 + 6H2O  C6H12O6 + 6O2
1. What compound serves to transfer and store energy for later use? Glucose
2. What is the general equation for photosynthesis?
6CO2 + 6H2O  C6H12O6 + 6O2
3. What gas is released into the air as a result of photosynthesis? Oxygen
4. What inorganic substances are necessary for photosynthesis?
Water (H2O) and sunlight
5. Could photosynthesis occur in a plant on a cloudy day? Yes
Explain:
Photosynthesis could occur because some sunlight is able to penetrate the
clouds. It would be slower than on a sunny day.
6. How do photosynthesis and cellular respiration relate to each other?
The products of photosynthesis are the reactants for cellular respiration and
the products of cellular respiration are the reactants for photosynthesis.