Biochemical Cycles Flashcards
Biochemical cycles.
The movement of a particular chemical through the biological and geographical or living and non living parts of the ecosystem.
The elements important to life that are recycled are.
Water oxygen carbon nitrogen and phosphorus.
The carbon cycle.
Biological processes such as photosynthesis respiration and decomposition take up and release carbon and oxygen during the carbon cycle.
Biosphere
Life
Lithosphere
Rock & Soil
Hydrosphere
Water
Atmosphere
Air
Cellular respiration.
Movement of carbon from living things to the atmosphere
Photosynthesis
Movement of carbon from the atmosphere to the biosphere.
Combustion
Movement of carbon from coal (lithosphere) to the atmosphere.
Decomposition
Carbon from piving things breaking down down into the soil (lithosphere)
What do all organisms require to make proteins
Nitrogen (to make amino acids, then make protein)
What do all organisms require to make amino acids
Nitrogen
Our atmosphere is ____% nitrogen gas
78
What form is nitrogen most commonly found in
N
2
In the nitrogen cycle what process allows N2 to be directly used by plants
Nitrogen fixation
Bacteria and lightning are responsible for
Nitrogen fixation
Nitrification
Nitrogen in the soil is converted to nitrates/nitrites by nitrifing bacteria
Assimilation
Plants use the nitrates/nitrites from nitrification
Denitrification
Turns the soil nitrates back to N2 gas
In the nitrogen cycle, decomposition turns nitrogen into _______ (and the name)
Ammonia, ammonification
Why is phosphorus important?
It helps form important molecules like DNA and RNA.
Where is phosphorus found?
Biosphere cycles among the land ocean settlements and living organisms.
What is the rate of the phosphorus cycle (fast or slow?)
Slow
Why is the phosphorus cycle slow
Phosphorus does not naturally occur in the app. It rarely occurs as a gas.
Phosphorus examples
During erosion, small amounts of phosphorus dissolve as phosphate in soil and water
From waste from organisms
Released by decomposers from dead organisms
How do plants get phosphorus
From soil and water through their roots
The water cycle.
Water moves between the ocean atmosphere and land.
Evaporation.
Add water as vapor to atmosphere through heat.
Transpiration
Water evaporates from the leaves of plants
Condensation.
Water vapor cools and condenses back into liquid droplets
Precipitation.
Water Water release from the atmosphere.
Percolation
Groundwater flow
On slide 12, label the water cycle
A- Evaporation
B- Transpiration
C- Percolation
D- Precipitation
E- Precipitation
On slide 13, label the letters
A- transpiration
B- evaporation
C- condensation
D- precipitation
Which material cycle relies least on the processes of photosynthesis, transpiration, evaporation, respiration, and condensation?
nitrogen cycle
On slide 14, label the diagram
A- Photosynthesis by producers
B- Plant respiration
C- Animal respiration
D- Carbon fixation by consumers
E- Decomposition
F- Fossil fuels and fossils
G- Fossil fuel combustion
H-
Which statement correctly describes how nitrogen in the soil returns to the atmosphere?
Soil bacteria convert nitrates into nitrogen gas.
How do nitrogen-fixing bacteria help cycle nitrogen through ecosystems?
They capture nitrogen from the atmosphere and convert it into forms that plants can use.
