Photosynthesis
Photosynthesis
Photosynthesis
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<strong>Photosynthesis</strong>
<strong>Photosynthesis</strong>:<br />
Life from Light and Air
Plants are energy producers<br />
Like animals, plants need energy to live<br />
unlike animals, plants don’t need to eat<br />
food to make that energy<br />
Plants make both FOOD & ENERGY<br />
animals are consumers<br />
plants are producers
How do plants make energy & food?<br />
Plants use the energy from the sun<br />
to make ATP energy<br />
to make sugars<br />
glucose, sucrose, cellulose, starch, & more<br />
sun<br />
ATP<br />
sugars
Building plants from sunlight & air<br />
<strong>Photosynthesis</strong><br />
2 separate processes<br />
ENERGY building reactions<br />
collect sun energy<br />
use it to make ATP<br />
SUGAR building reactions<br />
carbon dioxide<br />
CO 2<br />
take the ATP energy<br />
collect CO 2 from air &<br />
H 2 O from ground<br />
use all to build sugars<br />
+<br />
water<br />
H 2 O<br />
H 2 O<br />
sun<br />
CO 2<br />
sugars<br />
C 6 H 12 O 6<br />
+<br />
ATP<br />
sugars
Using light & air to grow plants<br />
<strong>Photosynthesis</strong><br />
using sun’s energy to make ATP<br />
using CO 2 & water to make sugar<br />
in chloroplasts<br />
allows plants to grow<br />
makes a waste product<br />
carbon<br />
dioxide<br />
oxygen (O 2 )<br />
+ water +<br />
sun<br />
energy<br />
(ATP) = used to build the sugar<br />
→ glucose + oxygen<br />
6CO 2 + 6H 2 O + sun C 6 H 12 O 6 6O<br />
energy → + 2
What do plants need to grow?<br />
The “factory” for making<br />
energy & sugars<br />
chloroplast<br />
sun<br />
Fuels<br />
sunlight<br />
carbon dioxide<br />
water<br />
CO 2<br />
ATP<br />
H 2 O<br />
sugars
<strong>Photosynthesis</strong><br />
sun<br />
ADP<br />
H 2 O<br />
ENERGY<br />
building<br />
reactions<br />
SUGAR<br />
building<br />
reactions<br />
CO 2<br />
ATP<br />
sugar<br />
used immediately<br />
to synthesize sugars
Chloroplasts are only in plant cells<br />
animal cells<br />
plant cells<br />
What are these energy producing organelles?<br />
What is this energy producing organelle?
Chloroplasts<br />
Leaf<br />
absorb<br />
sunlight & CO 2<br />
Leaves<br />
sun<br />
CO 2<br />
Chloroplasts<br />
in cell<br />
Chloroplast<br />
Chloroplasts<br />
contain<br />
Chlorophyll<br />
Chloroplast<br />
make<br />
ENERGY & SUGAR
So what does a plant need?<br />
Bring In<br />
light<br />
CO 2<br />
H 2 O<br />
Let Out<br />
O 2<br />
Move Around<br />
sugars<br />
leaves<br />
roots<br />
shoot<br />
6CO 2 + 6H 2 O + light C 6 H 12 O 6 6O<br />
energy → + 2
How are they connected?<br />
Respiration<br />
glucose + oxygen → carbon + water + energy<br />
dioxide<br />
C 6 H 12 O 6 + 6O 2 → 6CO 2 + 6H 2 O + ATP<br />
<strong>Photosynthesis</strong><br />
carbon<br />
dioxide<br />
+ water +<br />
sun<br />
energy<br />
→ glucose + oxygen<br />
6CO 2 + 6H 2 O + light C 6 H 12 O 6 6O<br />
energy → + 2
Energy cycle<br />
sun<br />
<strong>Photosynthesis</strong><br />
plants<br />
CO 2<br />
H 2 O<br />
glucose<br />
sugars<br />
O 2<br />
animals, plants<br />
Cellular Respiration<br />
ATP
Another view…<br />
capture<br />
light energy<br />
sun<br />
<strong>Photosynthesis</strong><br />
producers, autotrophs<br />
synthesis<br />
CO 2<br />
waste<br />
H 2 O<br />
waste<br />
consumers, heterotrophs<br />
Cellular Respiration<br />
organic<br />
molecules<br />
food<br />
O 2<br />
waste<br />
digestion<br />
release<br />
chemical energy<br />
ATP
Questions – Answer in Paragraph form<br />
What is <strong>Photosynthesis</strong>?<br />
How does it work?<br />
What are the reactants and products?<br />
What is Cellular Respiration?<br />
How does it work?<br />
What are the reactants and products?
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