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Energy is not the only thingthat moves through the
ecosystem.
Atoms are never destroyed . . . only transformed.
http://mff.dsisd.net/Environment/Cycles.htm
Take a deep breath.The atoms you just inhaled may have been inhaled by a dinosaur millions of years ago.
http://educ.queensu.ca/~fmc/august2004/pages/dinobreath.html
ENERGY & MATTER
4 ATOMS make up 95% of the body in most organisms
CARBON
HYDROGEN
OXYGEN
NITROGEN
The same molecules are passed around again and again within the biosphere in___________________________BIOGEOCHEMICAL CYCLES
WHY IS WATER IMPORTANT?Makes up 60-70% of your body
Oxygen and Hydrogen are found in all the ________________________: carbohydrates, proteins,
nucleic acids, lipids
Hydrogen in H2O supplies protons (H+) & electrons for_______________
http://www.lsbu.ac.uk/water/molecule.htm
building blocks of cells
photosynthesis
WHY IS WATER IMPORTANT?Water is a good _________________Many molecules dissolve in water so itprovides a place for chemical reactionsto happen
Water doesn’t change temperature easily so it helps with__________________
http://www.lsbu.ac.uk/water/molecule.htm
SOLVENT
HOMEOSTASIS
WATER CYCLE
evaporation
condensation
http://www.radio-canada.ca/jeunesse/fd6/000_images/cat/c_buee_c.gif
The return of water tothe surface in the form ofrain, snow, sleet, hail, etc.= ____________________
The evaporation of water from the surface of plant leaves = ________________
http://www.css.cornell.edu/faculty/hmv1/watrshed/Etrans.htm
TRANSPIRATION
PRECIPITATION
PH ONLINE LINK Put in code: cbp-2033 Choose Start
Image edited from: http://www.cotf.edu/ete/modules/msese/earthsysflr/water.html
WATER CYCLE
4 main CARBON reservoirs in BIOSPHERE
CO2 inatmosphere
CO2 inOcean
BIOLOGY; Miller and Levine; Prentice Hall; 2006
1.In ____________ as CO2 gas 2.In _______ as dissolved CO2 gas3.On _______ in organisms, rocks, soil4.__________ as coal & petroleum (fossil fuels) and
calcium carbonate in rocks
atmosphereocean
landUnderground
Where does CO2 in atmosphere come from? CO2 in
atmosphere
CO2 inOcean
BIOLOGY; Miller and Levine; Prentice Hall; 2006
1.________________ 2.______________ 3._________________4.____________ of dead organisms
Volcanic activityHuman activity (burning fossil fuels)
Cellular respirationDecomposition
WHY IS CARBON IMPORTANT?
Found in all the _______________ of cells: carbohydrates, proteins,
nucleic acids, lipids
Image by Riedell
http://web.jjay.cuny.edu/~acarpi/NSC/12-dna.htm
BUILDING BLOCKS
WHY IS CARBON IMPORTANT?
Carbon in CO2 provides the atoms for __________ production during __________________... the fuel that all living things depend on.
http://www.science.siu.edu/plant-biology/PLB117/JPEGs%20CD/0076.JPG http://www.biologyclass.net/mitochondria.jpg
GLUCOSE
PHOTOSYNTHESIS
N2 in Atmosphere
NH3
NO3-
and NO2-
Section 3-3
NITROGEN CYCLE
BIOLOGY; Miller and Levine; Prentice Hall; 2006
WHY IS NITROGEN IMPORTANT?
Image by Riedell
__________________make DNA and RNA
Adenine (nitrogen base) is used in _______
Makes AMINO part of _________ (proteins)
Image by Riedell
http://web.jjay.cuny.edu/~acarpi/NSC/12-dna.htm
NITROGEN BASES
ATP
amino acids
79% of the atmosphere is made up of NITROGEN gas
(N2)
Image by Riedell Image by Riedell
http://web.jjay.cuny.edu/~acarpi/NSC/12-dna.htm
BUT we _____ use the nitrogen gas we breathe!
The bond in N2 gas is sostrong it can only be broken by__________________________________________________
CAN’T
lightning
Volcanic activity
few special bacteria
http://www.slic2.wsu.edu:82/hurlbert/micro101/images/101nodules21.gif
Bacteria that live ______________and in _________ relationships withplants called _________, take nitrogen from the atmosphere and turn it into ______________, a form that is usable by plants.
THIS PROCESSIS CALLED_________________
in the soil
symbiotic
legumes
AMMONIA (NH3)
NITROGEN FIXATION
Image from: http://www.utdallas.edu/images/departments/biology/misc/gonzalez-image.jpg and http://www.cibike.org/CartoonEating.gif modified by Riedell
Other bacteria in the soil convertammonia into ________________& _________________which plants can also use. The nitrogen we need for proteins, ATP, and nucleic acids comes from
the ___________ ___________ we breathe!
NITRATES (NO3- )
FOOD WE EAT
NOT THE AIR
& NITRITES (NO2-)
N2 in Atmosphere
NH3
NO3-
and NO2-
Section 3-3
NITROGEN CYCLE
BIOLOGY; Miller and Levine; Prentice Hall; 2006