Nitrogen Cycle
Created By: Alesia Smyre, Landra Mohler, Kyle Dishman,
Lizbeth Estrada
Intro
•
Living things require nitrogen
to produce amino acids.
Nitrogen accounts for up to
78% of the atmosphere,
interestingly enough, most
organisms cannot use this
form of nitrogen.
•
A fixed form is necessary. The
nitrogen cycle produces a
fixed form of nitrogen these
living things need.
Step 1
A special type of bacteria
called Nitrogen-Fixing
Bacteria, intakes
atmosphere nitrogen and
creates ammonia (NH3).
Step 2
Other bacteria uses this
ammonia to produce nitrates
and nitrites. These
compounds contain nitrogen
and oxygen.
Step 3
The nitrates and nitrites are
used by plants to make
amino acids, which are
transformed to make plant
proteins.
Step 4
Plants are eaten by other
living things which use the
plant amino acids to make
their own
Step 5
Decomposers convert the
nitrogen found in other
organisms into ammonia,
then excrete it into the soil.
Then the cycle
begins again.
Questions?
•
How do animals receive their nitrogen?
A) By eating
B) the sun
C) the soil
D) by walking/dancing
Questions?
Fixation is a process where
bacteria turns nitrogen into?
A) gas
B)sunlight
C) energy
D) ammonium
Questions?
When do plants use their chlorophyll?
A) while reproducing
B) During photosynthesis
C) After eating
D) while being exposed to sunlight
Sources
•
http://users.rcn.com/jkimball.ma.ultranet/
BiologyPages/N/NitrogenCycle.html https:/
•
eo.ucar.edu/kids/green/cycles7.htm
•
http://www.nature.com/scitable/knowledge/
library/the-nitrogen-cycle-processes-playersand-human-15644632