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The Carbon Cycle. What is the Carbon Cycle?. Nutrient cycle in which CARBON ATOMS are RECYCLED through the abiotic and biotic parts of an environment. CARBON ATOMS. - PowerPoint PPT Presentation
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M.BREGAR (DANTE C.S.S.)1
The Carbon Cycle
M.BREGAR (DANTE C.S.S.) 2
What is the Carbon Cycle?Nutrient cycle in which CARBON ATOMS are
RECYCLED through the abiotic and biotic parts of an environment.
Wood burned produces carbon dioxide. The carbon being released had been stored within the plant through photosynthesis.
Any excreted waste can contain large amounts of carbon that can be recycled as fertilizer. Consumers of plants ingest the carbon stored within the plant. The same carbon, originally from wood, becomes apart of the animal back to the plants
CARBON ATOMS
M.BREGAR (DANTE C.S.S.)3
What is the Carbon Cycle?
Consists of two processes in the BIOTIC environment:
PHOTOSYNTHESIS (in AUTOTROPHS)
&
CELLULAR RESPIRATION (in HETEROTROPHS & AUTOTROPHS)
M.BREGAR (DANTE C.S.S.)4
Autotrophs Organisms having the ability to synthesize their own food
Examples:
Plants & Algae
M.BREGAR (DANTE C.S.S.)5
Autotrophs Organisms that can make their own food, such
as plants which make their food from inorganic substances
Why are autotrophs imporant?
Called producers because they produce chemical energy for an entire ecosystem
Convert inorganic substances & light into organic substances containing CHEMICAL ENERGY (i.e. food)
M.BREGAR (DANTE C.S.S.)6
Heterotrophs
Organisms that do not make their own food
Also known as consumers – they “eat other things”
Ex. Deer, Mushrooms (a decomposer), Rabbits
M.BREGAR (DANTE C.S.S.)7
Heterotrophs
Various types of consumers:
1. Scavengers/Detrivores Feed on dead tissue of organisms (both plans and
animals) Ex. – Vultures, Crows, and Shrimp
M.BREGAR (DANTE C.S.S.)8
Heterotrophs
2. Herbivores Eat ONLY plants Ex. – Cows, Elephants, Giraffes
M.BREGAR (DANTE C.S.S.)9
Heterotrophs
3. Carnivores Eat ONLY meat Ex. – Lions, Tigers, Sharks
M.BREGAR (DANTE C.S.S.)10
Heterotrophs
4. Omnivores Eat BOTH plants and animals Ex. – Bears and Humans
M.BREGAR (DANTE C.S.S.)11
Heterotrophs
5. Decomposers Absorb any dead material and break it down Ex. – Bacteria and Mushrooms
M.BREGAR (DANTE C.S.S.)12
Photosynthesis
Takes place in autotrophs
M.BREGAR (DANTE C.S.S.)13
Photosynthesis
Takes place in autotrophs, specifically in the leaves of green plants
In photosynthesis, plants trap sunlight (energy from the sun) and use it to create food (sugar called glucose)
Key – plants turn light energy into chemical energy
M.BREGAR (DANTE C.S.S.)14
Photosynthesis EquationPhotosynthesis is the process in which plants
make food (sugar).Equation:
Carbon Dioxide + Water + Energy
Sugar + Oxygen
Taken from the environment
(air)
Roots absorb water from
soil and transport it to
the leaves
Chloroplasts (located in leaves) trap light energy
from sun
Called Glucose. It is a plants foodStored in body of
a plant
Released back into the air
(waste product)
Reactants Products
M.BREGAR (DANTE C.S.S.)15
Photosynthesis
M.BREGAR (DANTE C.S.S.)16
Photosynthesis
M.BREGAR (DANTE C.S.S.)17
Explaining Photosynthesis Plants can’t use light energy directly, instead they
must convert it to chemical energy in the process of photosynthesis
This chemical energy is eitherUsed to survive (energy to live)Stored as physical part of the plant (called
starch)
Now a Short Clip(PHOTOSYNTHESIS)
M.BREGAR (DANTE C.S.S.)18
Click icon to add picture
M.BREGAR (DANTE C.S.S.)19
M.BREGAR (DANTE C.S.S.)20
Explaining Photosynthesis
Heterotrophs consume the plant material for this stored chemical energy
M.BREGAR (DANTE C.S.S.)21
Cellular Respiration
Takes place in autotrophs & heterotrophs
M.BREGAR (DANTE C.S.S.)22
Cellular Respiration
CELLULAR RESPIRATION is when food (chemical energy) is broken down to release energy
This is called catabolism or “digestion”.
Sugar (Food) made by plants in photosynthesis is broken down through cellular respiration into an “energy form” which can be used
Now a Short Clip(METABOLISM)
M.BREGAR (DANTE C.S.S.)23
Click icon to add picture
M.BREGAR (DANTE C.S.S.)24
Cellular Respiration
Cellular Respiration takes place in the mitochondria of plant and animal cells
In respiration, Oxygen is combined with Sugar to produce ENERGY, Carbon Dioxide, and Water
M.BREGAR (DANTE C.S.S.)25
Cellular Respiration
The chemical equation for respiration, is essentially the opposite of photosynthesis
Chemical Equation:
Energy + Carbon Dioxide + Water
Sugar + Oxygen
Sugar which is made by producers or eaten
by consumers
Reactants Products
Used to breakdown the sugar. It is
“breathed” in by animals.
Energy is produced which allows the
animal to live
Waste Product of released into the
environment (breathed out)
Waste Product. Often reused, or can be released.
Now a Short Clip(CELL RESPIRATION)
M.BREGAR (DANTE C.S.S.)26
Click icon to add picture
M.BREGAR (DANTE C.S.S.)27
Complementary Processes Cellular Respiration & Photosynthesis are
complementary processes
M.BREGAR (DANTE C.S.S.)28
Carbon Storage
M.BREGAR (DANTE C.S.S.)29
Carbon Storage
Carbon is continually recycled in living ecosystems, but it can also be stored
Ways of storing carbon:
(1) Inroganic Carbon Storage (non – living)
(2) Organic Carbon Storage (living)
M.BREGAR (DANTE C.S.S.)30
Inorganic Carbon Storage
Storage of carbon atoms in non-living things occurs in 3 ways:
1) Atmosphere Carbon dioxide in the air Contains least stored carbon (0.03%)
M.BREGAR (DANTE C.S.S.)31
Inorganic Carbon Storage
2) Oceans Carbon dioxide dissolved in water Used by water plants for photosynthesis
M.BREGAR (DANTE C.S.S.)32
Inorganic Carbon Storage
3) Soil Carbon stored in rocks such as limestone Most carbon is stored in soil / rock Can be released when rocks are disturbed
(volcanoes, acid rain)
M.BREGAR (DANTE C.S.S.)33
Limestone & Acid Rain
M.BREGAR (DANTE C.S.S.)34
Limestone & Acid Rain
M.BREGAR (DANTE C.S.S.)35
Organic Carbon Storage
Carbon is stored in the bodies of living things
M.BREGAR (DANTE C.S.S.)36
Organic Carbon Storage
Carbon stored in living bodies is released when the organism dies and decomposes.
Carbon is continually being recycled
M.BREGAR (DANTE C.S.S.)37
Organic Carbon StorageCarbon stored in a body can be turned into
fossil fuels (gas, coal, etc.)
Peat (dead plant material) which gets buried can turn into Coal
M.BREGAR (DANTE C.S.S.)38
M.BREGAR (DANTE C.S.S.)39
M.BREGAR (DANTE C.S.S.)40
Where is all the carbon in our world
M.BREGAR (DANTE C.S.S.)41
Captain Carbon
A Review of The Carbon Cycle
M.BREGAR (DANTE C.S.S.) 42
The Carbon Cycle Captain's Log: After floating around for a while and enjoying the fresh air, I became restless and started to search for an adventure. Since I heard that green plants enjoy having carbon dioxide molecules over for company, I thought I'd give it a try!!!!!!
Captain Carbon with 2 of his oxygen buddies. Together they form a molecule called carbon dioxide
Before I knew it, I was converted from being part of a gas, CO2 into a glucose (sugar) molecule.
M.BREGAR (DANTE C.S.S.) 43
Photosynthesis Carbon dioxide + water + light energy → sugar + oxygen
M.BREGAR (DANTE C.S.S.) 44
Respiration
sugar + oxygen → water + carbon dioxide + energy
+
M.BREGAR (DANTE C.S.S.)45
Carbon Storage
M.BREGAR (DANTE C.S.S.) 46
The Carbon Cycle