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Carbon Cycle
N/A
27
Biology
9th Grade
11/03/2011

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Term

What four carbon-based compounds form the basis of life on earth?

(Four forms of organic carbon)

Definition
  1. Carbohydrates
  2. Proteins
  3. Lipids
  4. Nucleic acids
Term
List five forms carbon can take as it recycles in the biosphere. 
Definition
  1. Part of a human
  2. Part of a plant
  3. Free-floating carbon dioxide
  4. Locked away in the shell of a sea creature
  5. Part of a volcanic eruption
Term
List five processes that move carbon from one form to another.
Definition
  1. Photosynthesis (MAIN FOCUS)
  2. Respiration (MAIN FOCUS)
  3. Decomposition
  4. Combustion of Fossil Fuels
  5. Natural Weathering of Rocks
Term
What is photosynthesis?
Definition
The process by which plants capture carbon dioxide and convert it to simple sugars.
Term
How do animals obtain the element carbon?
Definition
They eat plants or other animals that have eaten plants.
Term
Name three types of organisms that carry out the process of respiration.
Definition
Plants, animals and decomposers.
Term
Define respiration.
Definition
Respiration is the process used to break down organic compounds into carbon dioxide.
Term
What is the photosynthesis process?
Definition

Energy + carbon dioxide + water (Reactante)

--------> (Yields)

Glucose + oxygen (Products)

Term
What is the equation for photosynthesis?
Definition

Sunlight (energy) + 6CO2 (carbon dioxide)  + 6H2O (water)

------->

C6H12O6 (glucose) + 6O2 (oxygen)

Term
Describe the process of decomposition.
Definition
Decomposers consume both dead matter and waste products and return it in to the atmosphere through respiration in form of carbon dioxide.
Term
Where do decomposers live?
Definition
Mostly in the soil and in water.
Term
How have humans added to the carbon cycle in recent years? What impact does this have?
Definition
By burning fossil fuels. The earth's atmosphere traps the carbon dioxide because carbon dioxide is a greenhouse gas and the trapped gas leads to a global temperature rise. Causes more CO2 emissions.
Term
What type of organism releases the largest amount of oxygen into the atmosphere? During what process is this oxygen created?
Definition
  • Phytoplankton (produces 75% of oxygen)
  • Photosynthesis
Term
What do plants do with carbon dioxide?
Definition
  • Use photosyntheiss to make glucose.
  • Glucose = C6H12O6
  • CO2 + H2O ------> C6H12O6
Term
CO2 enters a leaf through its...
Definition
Stomata
Term
H2O enters a plant through its...
Definition
Roots
Term
What is fast-track carbon cycling?
Definition
The flow of carbon between atmosphere, plants, animals and decomposers.
Term
Identify two ways that carbon stored in slow track cycling makes its way back to the earth's surface.
Definition
  • Weathering
  • Mining coal and natural gas
Term
How is carbon returned to the atmosphere during slow-track carbon cycling?
Definition
Combustion of fossil fuels.
Term
What is the earth's largest carbon reservoir in?
Definition
Oceans
Term
What is the key to sustaining the earth?
Definition
Balence carbon dioxide users and recyclers.
Term
What are three ways to promote a sustainable earth?
Definition
  1. Conserve energy
  2. Manage forests
  3. Alternate fuel sources
Term
Where is the element carbon not found?
Definition
Pure water
Term
Where is the element carbon found?
Definition
  • Diamonds
  • Earth's atmosphere
  • Human bodies
  • Living organisms
Term
Where are organic forms of carbon found?
Definition
Living organisms
Term
Scientific data shows that the buildup of greenhouse gases in the atmosphere is causing...
Definition
Temperatures on Earth to increase.
Term
What are the four spheres?
Definition
  1. Atmosphere
  2. Biosphere
  3. Geosphere (rocks and soil, fossil fuels, minerals)
  4. Hydrosphere
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