Transcript Lesson3_matterandenergy_decomposers

Friday, January 6, 2012
• Open to entry- Decomposers Notes
• Planner:
1) Group checkup on Monday
- some questions will be individual.
2) Test corrections
- due at end of tutorial on Tuesday 1/10
Three types of decomposers
Fungi (mushrooms)
Invertebrates
(earthworms, insects, snails)
Bacteria and Microscopic
Fungi (mold and yeast)
sugar
Plants’
or
animals’
dead
cell
EXTRACELLULAR DIGESTION!
• Jodi says that fungi are more like plants
than animals.
• Using evidence explain why she is wrong.
- Plants perform photosynthesisplants increase O2 and decrease CO2 in the air
- Decomposers increased the CO2 and
decreased O2 in the air
so they perform cellular respiration and are
more like animals.
MAIN CONCEPTS OF DECOMPOSERS UNIT
1) DECOMPOSERS ARE EVERYWHERE
2) DECOMPOSERS RECYCLE MATTER BY
PERFORMING CELLULAR RESPIRATION
• 1. How does a shelf fungus growing on a
dead log get the matter it needs from the
dead log to grow? (3 cards)
dead plant
Starch/
glucose
decomposer
glucose
decomposer
starch
• 2. How does a shelf fungus growing on a
dead log get the energy from the dead log
it needs to grow? (2 cards) or 3 cards
Glucose/
Starch in
dead plant
Glucose in
decomposer
Starch in
decomposer
chemical
chemical
chemical
• 3. A mouse died in the woods and begins
to decompose. Over time, the skin,
muscle, and other soft parts (that contain
carbon) disappear until all that is left is the
bones. Explain how the matter was used
to make the decomposer grow.
Dead consumer
(animal)
Starch/
glucose
decomposer
glucose
decomposer
starch
• 4. Explain what happened to the energy
that was stored in the mouse’s tissues
after it died. (words only needed for this
question)
Chemical Energy in dead mouse was
transferred to the decomposer.
No energy was lost.
• 5. Explain how the carbon in the mouse
that died in question 3 became of a plant
in the woods. (make sure you have cellular
respiration as part of your explanation)
Dead consumer
(animal)
Starch/
glucose
decomposer
glucose
decomposer
CO2
Cellular
Respiration
environment
CO2
living plant
CO2
living plant
glucose
living plant
starch
Photosynthesis
• 6. The largest living organism on Earth in terms of area is Armillaria
ostoyae, or the honey mushroom. The honey mushroom survives by
taking water and nutrients from roots, which kills trees. This fungus is
estimated to cover 2,200 acres, or a space equivalent to 1,665 football
fields and is all one, giant organism.
• Explain how the honey mushroom gets the energy it needs to power its
cells. In your explanation, include the original source of the energy to
planet Earth and how that energy gets to Environment
the fungus—and then how the
fungus uses that energy for movement/cellular work.
sun
light
Glucose in
living plant
chemical
Starch in
living plant
chemical
Photosynthesis
Glucose in
decomposer
chemical
thermal
ATP in a
Decomposer
cell
Cellular
Respirationchemical
Decomposer
Cell
Environment
kinetic
thermal
• Make a new entryCarbon Cycle- 1/6/12
• The role of decomposers is:
to recycle matter by doing cellular respiration.
• If there were no decomposers,
the amount of available carbon would decrease
over time
—dead stuff/waste would never be broken down
—and the carbon in that material couldn’t be
used again.
• Make a diagram with words or pictures that
shows the following:
• Carbon being removed from the air.
• Carbon being put back in the air from plants,
animals, man-made sources.
• Connections between plants, animals,
decomposers.
• Show the connections with arrows and label the
arrows with the name of the process.
Air (CO2)
photosynthesis
photosynthesis
DECOMPOSITION BY DECOMPOSERS