Snakes can
too ski!
I seen it on
YouTube
E=MC Hamster
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Gravity is
Just a myth!
Now Go Jump off
a Roof.
Thotophnthiffis
(Don’t really Do That!)
Dogs
(It’s my favorite
Floyd tune)
What is the source of light energy
that essential for photosynthesis?
The
SUN!
In the carbon cycle,
when we say
“energy” what
molecule are we
referring to?
Adensosine
Triphosphate
Aka…
ATP
What molecules are
required for cells to
undergo respiration
(what are the reactants)?
How do animals get the
carbon that they need?
O2=Oxygen
&
C6H12O6=Glucose
From Eating Plants(or
animals that eat plants.
How does nitrogen
get into the
atmosphere from
the biotic world?
Organisms die
and certain
bacteria release
the nitrogen as
free N2.
What are the products of
respiration?
Water, Carbon Dioxide, and
Energy (ATP)
What is succession (generally
speaking)?
The gradual development of a
community over time
What is primary
succession?
The process by which an
area with no biotic
elements develop a
community over time
(starting with the formation
of soil).
What is a pioneer species?
What is a climax species?
Pioneer: The an organism that is the
first to inhabit a previously
uninhabitable area. Lichen is one
example.
Climax: Slow growing and welladapted. Hardwood Trees (oaks,
maples) are examples.
How is secondary succession
different than primary
succession?
Secondary succession occurs in an area
where some event (natural or
human…like a fire maybe?) has
destroyed the pre-existing
community.
Also…there is already soil present
where secondary succession
occurs…not so for primary
succession.
What happens to the nitrogen that
you breathe in?
Nuthin’!
You can’t use free nitrogen (N2) and
neither can other animals or plants.
Plants and animals need fixed
nitrogen.
What is fixed nitrogen and where
does it come from?
Well…free nitrogen is absorbed
by plants and then nitrogen fixing
bacteria convert it to a form
that’s usable for plants and
animals.
Nitrogen fixing bacteria also
exist in soil and in water.
Lightning can also fix nitrogen.
Why is nitrogen important to living
things?
Nitrogen is important for making
things such as amino acids (for
making proteins) and nucleotides (in
DNA and RNA).
What are stages in the water cycle?
Evaporation: Liquid to gas
Condensation: gas to liquid
Precipitation: atmosphere to Earth
Transpiration: ground to
plants/animals to atmosphere
Why are these cycles (nitrogen,
carbon, and water) called cycles
anyway?
They involve the continuous
movement of substances from the
biotic (living) world to the
abiotic (non-living) world.
Where do photosynthesis and
cellular respiration mostly occur?
Photosynthesis: Chloroplasts
Cellular Respiration: Mitochondria
What types of organisms can
undergo photosynthesis?
Plants, algae, & cyanobacteria.
What is the name of the pigment
involved in photosynthesis that
captures the energy from
sunlight?
Chlorophyll
What is happening during
photosynthesis…generally speaking?
Plant cells are making food from
sunlight (carbon dioxide and water
are also necessary).
What is the formula for
photosynthesis?
sunlight
6CO2 + 6H2O
Reactants
C6H12O6 + 6O2
Products
Why do heterotrophs (like us)
depend upon photosynthesis to
survive?
Photosynthetic autotrophs (plants
and algae) are the base of almost all
food webs and energy pyramids.
They also produce oxygen, upon
which we are dependent.
What is happening during cell
respiration, and where do the
organisms doing this get the raw
materials to make it happen?
Animal and plant cells are
producing energy (ATP) from food
(glucose). The animals get food
from eating things, and the plants
make their own food using
photosynthesis. Animals take in
the oxygen needed by
breathing, and the plants take
in oxygen when sunlight isn’t
present.
What is the equation for cell
respiration?
C6H12O6 + 6O2
(Glucose)
Reactants
6CO2 + 6H2O + Energy
(ATP)
Products
How are the equations for
photosynthesis and respiration
related?
They are opposites (not exact…but
close)! The reactants (raw materials)
for one are the products of the other.
What is happening in
photosynthesis…generally speaking?
Most plants, cyanobacteria, and
algae make food (glucose) from
energy (ATP).
What is happening in cellular
respiration?
All organisms are making energy
(ATP) from food (glucose).