What color is the dress?
Blue and black, or
White and gold?
Stress Test
The following photo has 2 identical dolphins in it. Look at both
dolphins jumping out of the water. The dolphins are identical.
A closely monitored, scientific study group revealed that in spite of
the fact that the dolphins are identical, a person under stress would
find differences in the two dolphins. If the subject found many
differences between the dolphins, it meant that the person was
experiencing a great amount of stress.
Look at the photograph, and if you find more than one or two
differences you may want to take a vacation……
Please put your Course Registration forms in the
wire basket for me to sign…….
Energy Investigation Stations
Essential Question:
1. How do our cells determine who we are?
2. How do living things get energy needed for life?
Station #1: Exercise & Energy
1. Write the equation for cellular respiration using both
symbols and words:
C6H12O6 + 6O2
Glucose
(sugar)
oxygen
6CO2 + 6H2O + energy
Carbon
dioxide
water
ATP
Station #1: Exercise & Energy
3. Which time was faster? How do you explain this
in terms of cell respiration?
• 2nd time, after exercise.
• More exercise means you need more energy.
• Need to break down more glucose and
oxygen for energy. That means more carbon
dioxide produced as waste.
Station #2: ATP = ENERGY ASAP
4. Use the diagram on p. 203 to draw a picture
of an ATP molecule and ADP molecule below:
5. How is cell respiration like breaking a $100 bill into $1 bills?
Which bill is ATP like?
• Cell respiration = breaking large energy
glucose molecule into smaller energy ATP
molecules.
• ATP is like $1 bill because has less energy than
glucose, but in more usable form.
6. Use the tinker toy pieces at this station to construct a model of an ATP
molecule like the one on p. 203. Use the model to demonstrate how ADP
and ATP are used to store and release energy for cells. Get teacher initials
here to confirm your understanding: ______________
Energy released from ATP by
breaking off 3rd phosphate,
forming ADP
Energy stored by adding
3rd phosphate to ADP,
forming ATP
Cell Respiration:
C6H12O6 + 6O2
glucose
oxygen
36 ADP
6CO2 + 6H2O + energy
Carbon
dioxide
water
36 ATP
ATP
STATION #3: MAKING MOLECULES (PHOTOSYNTHESIS)
7. Write the equation for photosynthesis using both symbols
and words:
6CO2 + 6H2O + (energy)
Carbon
dioxide
water
light
C6H12O6 + 6O2
Glucose
(sugar)
oxygen
8.
6CO2
6H2O
9.
C6H12O6
6O2
6
10. How many carbon atoms go into photosynthesis? _____
6
How many come out? _______
12
11. How many hydrogen atoms go into photosynthesis? _____
How many come out? _______
12
18
12. How many oxygen atoms go into photosynthesis? ________
How many come out? ______
18
13. How many molecules of carbon dioxide do plants need to
make one molecule of glucose? Explain why this is so.
• 6
• Glucose molecule needs 6 carbon atoms; each
carbon dioxide molecule only has 1 carbon atom.
14.
chloroplast
G
nucleus
Cell wall
A
Cell
membrane
B
DNA
C
cytoplasm
D
E
F
H
mitochodrion
vacuole
15. In which cell structure does photosynthesis take place?
chloroplasts
16. In which cell structure does cell respiration take place?
mitochondria
chloroplasts
Elodea leaf cells
17. Would a plant be able to live without chloroplasts or
mitochondria? Explain why or why not.
No.
Without chloroplasts couldn’t make sugar for food.
Without mitochondria, couldn’t break down sugar to get
energy.
Photosynthesis Investigation 1
Before
A
After (in light)
A
B
C
B C D
After (in dark)
D
A
B
C
D
STATION #5: INTERDEPENDENCE & INTERCONNECTIONS
18. Take a look at the plant in the flask A. What color would you
expect the bromothymol blue solution in flask B to be after 24 hours?
(bromothymol blue is yellow in the presence of carbon dioxide, blue in
the presence of oxygen). Explain your answer.
• Blue
• Plant will
produce oxygen
from
photosynthesis.
19. Take a look at the animal(s) in the flask C. What color
would you expect the bromothymol blue solution in flask D to
be after 24 hours? Explain your answer.
• Yellow
• Fish will
produce carbon
dioxide from cell
respiration.
20. The jar labeled E contains snails and water plants, and has
been sealed airtight for more than 3 months. Explain how
this closed system illustrates the idea that parts of living
systems are interdependent (dependent on each other) and
interconnected (connected to each other).
• Plants make O2 for snails.
• Snails make CO2 for plants.
• Same water goes through
both.
21. What happened to the burning marshmallow after you
covered it with the glass jar?
Went out
22. Marshmallows are made up mainly of sugar. What does
this station tell you about burning sugar and cell
respiration? Both need oxygen to
happen.
23. Use what you learned at this station to
explain why you breathe harder when
exercising. Need more oxygen to break
down more sugar for energy.
STATION #7: AUTOTROPHS & HETEROTROPHS
24. What is the difference between an autotroph and a
heterotroph?
Autotrophs can make their own food;
heterotrophs have to eat other living things for
energy.
25. Identify each specimen at this station by name. Is it
autotroph, heterotroph, or both?
Name
a.
b.
c.
d.
e.
f.
g.
h.
Autotroph, heterotroph, or Both?
sponge
_______________________
mouse
_______________________
bacteria
_______________________
_______________________
gecko
plant
_______________________
octopus
_______________________
coral
_______________________
Venus fly trap
_______________________
Both
______________________
Heterotroph
______________________
Heterotroph
______________________
Heterotroph
______________________
Autotroph
______________________
Heterotroph
______________________
Both
______________________
Both
______________________
Spirogyra (algae)
Autotroph
Coral and Photosynthetic Algae
26. Why do living things need energy? Give 4 examples of
life processes that require energy.
•
•
•
•
•
•
•
•
Moving
Breathing
Heart beating
Thinking
Reproducing
Digesting food
Transporting things in & out of cells
Making more cells, more proteins
STATION #8: MAKING MOLECULES (CELL RESPIRATION)
27. Write the equation for cell respiration using both
symbols and words:
C6H12O6 + 6O2
Glucose
(sugar)
oxygen
6CO2 + 6H2O + energy
Carbon
dioxide
water
ATP
28.
C6H12O6
6O2
29.
6CO2
6H2O
30. Explain how cellular respiration and photosynthesis are
opposite processes.
glucose
(sugar)
glucose
(sugar)
• Photosynthesis makes sugar, cell respiration breaks it
down.
• The equation for CR is the opposite of photosynthesis.
31. Suppose you came home and found a family member
unconscious on the floor. What are the first two vital life functions
you should check for? Explain in terms of cell respiration why these
two functions are so important to check.
• Breathing and pulse.
• Breathing: make sure taking in
oxygen for CR
• Pulse: make sure oxygen being
pumped to all organs and cells so
they can do CR.
• Without oxygen, cells can’t break
down glucose for energy. Without
energy they die, you die.
Questions?
Exit Slip
Q: Write the chemical equation for photosynthesis
using symbols and words.
A:
Your name at bottom