December
3-4, 2009
•Diagnostic for
Photo/Resp.
•Introduce Essentials of
Photosynthesis and
Respiration
•Work to be done at
Home
Warm Up – What do we
know? Diagnostic – 5 Stars
• What is photosynthesis?
• What is respiration?
• What do you need for these
processes to occur?
– Ingredients? End products?
Chemicals? Formula’s?
• How are they related?
Human Bar Chart
Essential Learnings:
Photosynthesis and
Respiration
1. Understand how cells get their energy
2. Explain in your own words what
photosynthesis means
3. Write the “ingredients” and “final products”
of photosynthesis in words AND chemical
formulas
4. Describe the RESPIRATION process
5. Illustrate this cycle in which ENERGY flows
between plants and animals in nature
6. Understand that mass IS conserved in
nature
Photosynthesis
Four Ingredients needed
- Chloroplasts - part of a plant cell that
capture sun’s energy
- Sun – Energy reaches the Earth
- Carbon Dioxide – CO2 - gas in the air –
enters plant through the stomata
- Water (H2O) from the soil
Photosynthesis
Two PRODUCTS (end up with)
• A sugar called GLUCOSE
symbol = C6H12O6
•
Oxygen gas (O2) (waste product)
Photosynthesis Equation:
6CO2 +
carbon
dioxide
6H20
water
light
C6H12O6 + 6O2
sugar
oxygen
• On a global scale, photosynthesis is the most
important process to the welfare of life on Earth.
– Each year photosynthesis synthesizes 160 billion
metric tons of sugars per year.
6 waters + 6 carbon dioxides will make 1 sugar
molecule and 6 oxygen molecules
Introduction to Respiration
Process in which animals CONVERT
stored energy in sugars to put to
use for living (movement etc)
•
•
Need 2 things  Oxygen and
Sugar
Results in  Energy, Carbon
Dioxide and Water
Exhaling Carbon Dioxide
Lab
page 54
• Lab Write-Up
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–
–
–
–
Problem Statement
Hypothesis
Materials
Procedures – refer to page 54
Data
• Data table
– Conclusion
• Answer Analyze and Conclude # 1,2,3,4
Lab – Class Collects Data
together
Student
#1
#2
#3
#4
Time it took to Time to
change color change after
(no exercise) exercise
Explain BTB
• Indicator that changes color based
on pH
• Carbon Dioxide is an acid
• Adding Carbon Dioxide changed the
pH of the solution
• Blue if pH>6.8
• Clear/Yellow if pH < 6.8
Respiration equation:
C6H12O6 + 6O2
(sugar) oxygen
glucose
6CO2 + 6H20
carbon water
dioxide
The Cycle
Photosynthesis
occurs in
chloroplasts
Product of Respiration –
(animals healthy and
happy)
Chloroplasts
capture suns
energy
Water and Carbon
Dioxide
Waste products are
Respiration –
Energy for
organism produced
Products of
Photosynthesis (plant
happy and growing)
Sugars and Oxygen
Eat sugars and
use oxygen to
respire or
breathe
Illustrate the Process
• Develop a Poster that represents the
Photosynthesis and Respiration Cycle
• Criteria:
– Show the connection between the Sun, plants
and animals.
– Include names and Chemical formulas for each
“ingredient” or “product”
– Properly “Name” each step of the process
– Include how many of each “part” are required to
make the process work
Is it a good Learning Tool?
____ /10
Show the connection between
the Sun, plants and animals
_____ /5
Include names and Chemical
formulas for each “ingredient” or
“product”
_____ /5
Properly “Name” each step of
the process
Include how many of each “part”
are required to make the process
work
Overall Pride in your work
_____ /3
_____ /7
_____ /5
Time to Summarize
• All voices will be heard and shared
• Compact all your thoughts related to
your prompt into 4 or LESS words
and then prepare to share..
• Example: Tarheels take it all!
• Surfing…say no more!
Journal Entry #2
Use your journal notes to answer the
following questions
1. What 4 ingredients are needed for
photosynthesis to occur?
2. What is the result (products) of
photosynthesis?
3. What is cell respiration? What is
needed? What is produced?
4. How are photosynthesis and respiration
connected (cycle)
Demo to get kids thinking
1. Make observations of the solution
in the beaker?
2. What will happen when Ms. Keever
drinks the solution?
3. What will happen if Mr. Blank blows
through the straw into the solution?
4. Conduct Demo
5. Record observations and try to
explain it.
Journal Entry
• What ingredients do you need to
have photosynthesis occur?
• What are the results (Products) if
photosynthesis can occur
• Write word and chemical formula
answers