
How do animals store Energy? Plants?

What gas do animals breath in and what gas
do animals breath out during the day? What
about at night?
What gas do animals breath in and what gas
do animals breath out during the day? What
about at night?

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2
1.
Plants use
photosynthesis to
make sugars
2.
Photosynthesis is a
process that
captures energy
from sunlight to
make sugars that
store chemical
energy
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3. Equation for whole photosynthetic process
6CO2 + 6H2O
C6H12O6 (sugar)+ 6O2
Identify the reactants and the products.
4
1.
Photosynthesis in plants occurs in
chloroplasts
a. Takes place in two parts: stroma and thylokoid
2.
Most chloroplasts are in leaf cells
grana (thylakoids)
chloroplast
stroma
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1.
Plant produce food for themselves and
other organisms.
Where does ALL the energy originate from?
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 All energy comes from the SUN!
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2. Regulates Earth’s environment
(removes carbon dioxide from Earth’s
atmosphere)
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Factors that Affect Photosynthesis
Temperature
• As temperature increases, the rate of photosynthesis
increases to a maximum and then decreases when temps
get too hot.
– The rate peaks at a certain temperature,
at which many of the enzymes that
catalyze the reactions become ineffective.
Also, the stomata begin to close, limiting
water loss and entry of carbon dioxide.
9
Which graph represents the affect of temperature on
the rate of photosynthesis?
10
Draw this graph in your notes
11
Factors that Affect Photosynthesis
Light Intensity
•Rate of photosynthesis increases as light intensity
increases
•However, at some point all available e- are
excited, and the maximum rate of photosynthesis
is reached
12
Which of the graphs represents the effect of light
intensity on the rate of photosynthesis?
13
Draw the circled image in your notes
14

T4 pg. 113-115
 Place Summaries of each page on the blank page
on the back.

Will collect Notebooks Friday.
 If needed there is a checklist online.
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