Photosynthesis Life from Light and Air Regents Biology
Photosynthesis: Life from Light and Air Regents Biology 2008 -2009
Plants are energy producers § Like animals, plants need energy to live § Unlike animals, plants don’t need to eat § food to make that energy _____________________________ u Regents Biology
How do plants make energy & food? § Plants use the energy from the sun _____________________________ u § glucose, sucrose, cellulose, starch, & more sun ATP sugars Regents Biology
Building plants from sunlight & air § Photosynthesis u 2 separate processes u ____________ sun § collect sun energy § use it to make ATP u ATP ____________ § take the ATP energy § collect CO 2 from air & H 2 O from ground § use all to build sugars carbon dioxide water + HO CO Regents Biology 2 2 H 2 O + CO 2 sugars C 6 H 12 O 6 sugars
Using light & air to grow plants § ______________________________________ u ___________________ u ___________________ § ______________________ (ATP) = used to build the sugar carbon sun + water + energy glucose + oxygen dioxide 6 CO 2 + 6 H 2 O + sun �C 6 H 12 O 6 + 6 O 2 energy Regents Biology
What do plants need to grow? § The “factory” for making energy & sugars u _________ sun § Fuels CO 2 __________________ u _________ Make ATP! Make sugar! I can do it all… And no one even notices! u § The Helpers u H 2 O _________ Regents Biology ATP enzymes sugars
Photosynthesis sun _______ ATP ADP _______ H 2 O Regents Biology CO 2 used immediately to synthesize sugars sugar
Chloroplasts are only in plants animal cells plant cells Regents Biology
Chloroplasts Leaves Leaf _____________ sun CO 2 _____________ __________ Regents Biology _______________
So what does a plant need? § Bring In ______ leaves u ___________ u § Let Out u ______ § Move Around u shoot ______ roots 6 CO 2 + 6 H 2 O + light C 6 H 12 O 6 + 6 O 2 Regents Biology energy
Leaf Structure ____________ ________ ____ Regents Biology _______
xylem (water) Transpiration O 2 § ____________ § so it. Biology gets Regents O C stomate O 2 H to leaves from roots C guard cells
Transpiration § Water evaporates from the stomates in the leaves u pulls water up from roots § water molecules stick to each other u more water is pulled up tree from ground Regents Biology
Function of Leaf Structures § Cuticle u ____________________ § Epidermis u ____________________ § Palisades layer u ________________________________________ § Spongy layer u ____________________ § ____________________ w ____________________ Regents Biology
Stomates & Guard Cells § _________________ u u u ______________________________ § gets to leaves for photosynthesis § _________________ u _______________ guard cell stomate Regents Biology
Guard cells & Homeostasis § Homeostasis u keeping the internal environment of the plant balanced § ________________________ u ________________________ § ____________ u ____________ Regents Biology
Xylem ___________ Regents Biology
Phloem: food-conducting cells Regents Biology § ____________________ ü __________________ ü _________
How are they connected? ________ glucose + oxygen carbon + water + energy dioxide C 6 H 12 O 6 + 6 O 2 6 CO 2 + 6 H 2 O + ATP _________ carbon sun + water + glucose + oxygen energy dioxide 6 CO 2 + 6 H 2 O + light C 6 H 12 O 6 + 6 O 2 energy Regents Biology
Energy cycle sun Cellular Respiration __________ CO 2 H 2 O __________ Cellular Respiration The Great Circle of Life! Where’s Mufasa? Regents Biology ATP
Energy cycle capture light energy Cellular Respiration synthesis __________ CO 2 __________ O 2 H 2 O ______________ digestion Cellular Respiration Regents Biology release chemical energy ATP
The poetic perspective § All of the solid material of every plant § was built out of thin air All of the solid material of every animal was built from plant material air Regents Biology Then all the cats, dogs, mice, people & elephants… are really strands of air woven together by sunlight! sun
Got the energy… Ask Questions!! Regents Biology 2008 -2009
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