What color is the dress?

Blue and black, orWhite and gold?

Stress TestThe 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?

1. Write the equation for cellular respiration using both symbols and words:

C6H12O6 + 6O2 6CO2 + 6H2O + energy

Glucose(sugar)

oxygen Carbondioxide

water ATP

Station #1: Exercise & Energy

Station #1: Exercise & Energy3. 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 ASAP4. 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 6CO2 + 6H2O + energy

glucose oxygen Carbondioxide

water ATP

36 ADP 36 ATP

STATION #3: MAKING MOLECULES (PHOTOSYNTHESIS)

7. Write the equation for photosynthesis using both symbols and words:

6CO2 + 6H2O + (energy) C6H12O6 + 6O2

Carbondioxide

water light Glucose(sugar)

oxygen

8.6CO2 6H2O

9.

6O2C6H12O6

10. How many carbon atoms go into photosynthesis? _____ How many come out? _______11. How many hydrogen atoms go into photosynthesis? _____ How many come out? _______12. How many oxygen atoms go into photosynthesis? ________ How many come out? ______

66

1212

1818

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.

A B

C

DE

F

G

H

Cell wall nucleus

DNA

cytoplasm

mitochodrion

chloroplast Cellmembrane

vacuole

14.

15. In which cell structure does photosynthesis take place? 16. In which cell structure does cell respiration take place?

chloroplasts

mitochondria

Elodea leaf cells

chloroplasts

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

After (in dark)After (in light)

A

A

AB

B

B C

CC

D

D

D

STATION #5: INTERDEPENDENCE & INTERCONNECTIONS18. 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?

22. Marshmallows are made up mainly of sugar. What does this station tell you about burning sugar and cell respiration?

23. Use what you learned at this station toexplain why you breathe harder whenexercising.

Went out

Both need oxygen to happen.

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 Autotroph, heterotroph, or Both?

a. _______________________ ______________________b. _______________________ ______________________c. _______________________ ______________________d. _______________________ ______________________e. _______________________ ______________________f. _______________________ ______________________g. _______________________ ______________________h. _______________________ ______________________

sponge Bothmouse

bacteriageckoplantoctopus

BothVenus fly trap

HeterotrophHeterotrophHeterotrophAutotrophHeterotroph

coralBoth

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 6CO2 + 6H2O + energyGlucose(sugar)

oxygen Carbondioxide

water ATP

28.

6O2C6H12O6

29.6CO2 6H2O

30. Explain how cellular respiration and photosynthesis are opposite processes.

• Photosynthesis makes sugar, cell respiration breaks it down.

• The equation for CR is the opposite of photosynthesis.

glucose(sugar)

glucose(sugar)

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