Name________________________________________________________Period__________Date_____________________________
PhotosynthesisHomework#1
1. WhatistheultimatesourceofenergyforalllivingthingsonEarth?_____________________________________
2. Duringphotosynthesis,the_____________________fromthesunisusedtoproducemoleculesof
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3. WhatdotheinitialsADPandATPstandfor?Whatistheroleofthesemoleculesinsideacell?
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4. HowmanyphosphategroupsareinADP?_________HowmanyphosphategroupsareinATP?_______
Whatisthesignificanceofthisthirdphosphate?__________________________________________________________
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5. DescribethethreepartsoftheADP/ATPmolecule.______________________________________________________
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6. ListfourcellularactivitiesthatwouldrequiretheenergyofATP._______________________________________
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7. WhathappenstomakeATPbecomeADP?Whyisthisimportantforthelifeofthecell?______________
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8. HowdoesADPbecomeATP?Wheredoesthisenergycomefrom?______________________________________
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9. Whatisthedifferenceinthewayautotrophsandheterotrophsobtainenergy?Giveexamplesof
autotrophsandheterotrophs._______________________________________________________________________________
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10. Whatistheequationforphotosynthesis?Howdoestheplantobtaineachofthereactants?
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11. Howdoeschlorophyllmakeaplantappeartobegreen?_________________________________________________
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12. WhatplantstructurescontrolthepassageofH2OoutoftheplantandCO2intotheplant?____________
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13. Whymightthestomatabecalled“necessaryevils”?_______________________________________________________
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MultipleChoice:
14. __________ Whichoneofthefollowingisnotrequiredforphotosynthesis?
a.water
b.carbondioxide c.chlorophyll
d.oxygen
e.lightenergy
15. __________ Whichofthefollowingisatruestatementaboutchlorophyll?
a. Itabsorbsmostlygreenlight.
b. ItisresponsiblefortheredandorangecolorsofleavesintheFall.
c. Itabsorbsredandbluelightthebest.
d. Itisusefulforphotosynthesis,butnotabsolutelynecessary.
TrueorFalse:
16. Photosynthesisistheprocessoftrappingthesun’senergyinorder
tomakemoleculesofglucose.
17. Carbondioxideisproducedduringphotosynthesis.
18. ATPisveryenergypoorandADPisveryenergyrich.
19. Heterotrophsdependonautotrophs,butautotrophsarenot
dependentonheterotrophs.
20. Allpartsoftheplantarecapableofcarryingout
photosynthesis.
21. Theprimaryphotosyntheticcellsofaleafarethespongycells.
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FillintheBlank:
22. Organismsthatcanmaketheirownfood.
23. Organismsthatcannotmaketheirownfood.
24. Lifeonearthisdependentonphotosynthesisforwhattwo
things?
25. Whydoautotrophsdependonheterotrophs?
26. Waterisrequiredforphotosynthesis.Howdoestheplant
acquirethis?
27. Carbondioxideisrequiredforphotosynthesis.Howdoesthe
plantacquirethis?
28. Anysubstancethatabsorbslight.
29. Whatisthenameofthewaxylayerfoundontheupperand
lowersurfaceofaleaf?
30. Whyisthiswaxylayernecessary?
31. Whatisthenameofthecellsintheleafthataretheprimary
photosyntheticlayeroftheleaf?
32. Whatisthenameofthemiddleportionoftheleaf?
33. Poresontheundersideoftheleafthatletcarbondioxideinto
theleaf.
34.
Thiscarrieswatertotheleavesfromtheroots.
35.
Thiscarriesfoodoutoftheleaftoallotherpartsoftheplant.
Created by Amy Brown
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