Part 1: What’s In A Leaf?

Reactants YIELD products • Reactants: the substances that are required (go in) • Products: the substances that are produced (go out)

Let’s Check Our Answers 1. What is the purpose of having a water-tight covering?

What biomolecule makes up this covering? lipid

Let’s Check Our Answers 2. What organelle do these spots represent? cholorplasts Why would there be more in the palisade mesophyll layer than in the spongy mesophyll layers?

Let’s Check Our Answers 3. During the time that stomata (the plural of stoma) are closed, gases cannot enter or leave. Explain how this would affect the plant’s ability to do photosynthesis. If gasses are unable to enter the leaf, then photosynthesis cannot take place because the leaf is unable to take in CO2 and release O2.

Let’s Check Our Answers 5. In grammatically correct sentences, explain the path of the reactants for photosynthesis as they enter the leaf. Carbon dioxide is taken in through the stoma and water is absorbed through the roots.

Let’s Check Our Answers • In grammatically correct sentences, explain the path of the products for photosynthesis as they exit the leaf. The sun’s energy is used to convert the reactants into glucose in the chloroplast and oxygen is released through the stoma.

Part 4: Putting It All Together 5. What type of energy is used in photosynthesis? solar (sun) 6. Is the energy source a reactant, product, or neither? neither 7. Photosynthesis typically occurs in what type of organism? plants 8. Where are CO2 and O2 found in the environment? the atmosphere 9. What organelle does photosynthesis take place in? chloroplast

Part 4: Putting It All Together 10.What is the overall purpose for photosynthesis? To make sugar (stored energy) that the plant will convert into useable energy (ATP).

Solution Station 3. Glucose, ATP 4. Plants AND animals 5. Oxygen: atmosphere – release by plants Glucose: made in plants, consumed by animals 6. Mitochondria 7. Convert glucose (stored energy) into ATP (usable energy)

Part 3: Putting Cell Energy Together 9. What are the two main differences between the chemical reaction for photosynthesis and the chemical reaction for cellular respiration? • Cellular respiration produces ATP (useable energy), while photosynthesis makes food. • The products of one equation are the reactants of the other (minus ATP)

Part 3: Putting Cell Energy Together 10.How are photosynthesis and cellular respiration related (similar)? • The products for photosynthesis are the reactants for cellular respiration. The products for cellular respiration are the reactants for photosynthesis. • They both use/make Oxygen, Carbon Dioxide, Glucose, and Water

How are Photosynthesis and Cellular Respiration related? As you watch this video, think about how the products and reactants of cellular reparation are related. Photosynthesis vs. Cellular Respiration

Snails and Elodea Lab - Light

Snails and Elodea Lab (exp. 1)

Test Tube #1 Test Tube #2 Test Tube #3 Test Tube #4

What is in the test tube?

Beginning color of test tube.

Just water

Blue

If placed under a LIGHT, what do you think will happen to the color of the test tubes and WHY?

Results (After 48 hours, what DID happen)

Results from the LIGHT experiment

One of the test tubes turned yellow, meaning excess CO2 was present in the test tube with only the snail. 1.What cellular process took place that caused the color change in the test tube with the snail and water above? 2.Why did the other test tube containing a snail not change color?

Snails and Elodea Lab - Dark

Snails and Elodea Lab (exp. 2)

Test Tube #1 Test Tube #2 Test Tube #3 Test Tube #4

What is in the test tube?

Beginning color of test tube.

Just water

Blue

If placed in the DARK, what do you think will happen to the color of the test tubes and WHY?

Results (After 48 hours, what DID happen)

Results from the DARK experiment

Three of the test tubes turned yellow. 3.Explain what would caused the liquids to change color.

Part 5: Concept Map of Cell. Resp. Cellular Respiration Aerobic Respiration

Anaerobic Respiration Alcoholic Lactic Acid Fermentation Fermentation