lesson 19.2: photosynthesis (unlock) essential question...

April 27, 2015

Lesson 19.2: Photosynthesis

(Unlock) Essential Question:-How does photosynthesis compare to cellular respiration?

Learning Target(s):-Explain how photosynthesis compares to cellular respiration.

Photosynthesis

Are plants autotrophs or heterotrophs? Explain.

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I. Photosynthesis occurs in chloroplastA. (Photo = light Synthesis = Put together)

Light puts together glucose

B. Directly and indirectly produces food for all organisms

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C. Removes carbon dioxide from and adds oxygen to atmosphere

How is chlorophyll like a solar cell?

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D. Reactions: a. Light-Dependent:

-light energy splits H2O into O and H -O released as waste product

b. Light-Independent -CO2 and H combine to make sugar

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E. Chemical Formula Equation: Light Energy + 6 CO2 + 6 H2O C6H12O6 + 6 O2

Carbon Dioxide Water Glucose (sugar) Oxygen

Raw Materials/Reactants

Products

YieldsNot a material but used

in reaction

Where do the raw materials for photosynthesis come from?

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A

B

D

C

E

G F

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II. Cellular Respiration occurs in mitochondria A. Break down food (glucose) for energy B. Provides plants with CO2

What is the connection between respiration and breathing?

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C. Chemical Formula Equation: C6H12O6 + 6 O2 6 CO2 + 6 H2O + Energy Glucose (sugar) Oxygen Carbon Dioxide Water

Raw Materials/Reactants

ProductsYields

Where do the raw materials for respiration come from?

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A B C

D E

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Autotrophs)might)survive)when)heterotrophs)cannot,)because)autotrophs)are)able)to)_____.)

A.#reproduce#

B.#become#resistant#

C.#exist#without#respira7on#

D.#make#their#own#food

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III. Comparing 2 Energy Processes

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Photosynthesis Respiration

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Why does cellular respiration add carbon dioxide to the atmosphere, but photosynthesis does not?

0 I get it! I know that during photosynthesis, cells ...

0 I need extra help with ...

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Science Quiz: Photosynthesis

1. 2.

5. 6. 7.

8. 9.

3.

4.

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Science Quiz: Photosynthesis and Respiration

1. In which organelle does photosynthesis take place?

2. In which organelle does respiration take place?

3. Does the following equation pertain to photosynthesis or respiration?Light Energy + 6 CO2 + 6 H2O C6H12O6 + 6 O2

4. What are the products of respiration?

5. How many hydrogen atoms are there in H2O?

6. How many hydrogen atoms are there in 6H2O?

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7.

_8_ + _9_

_10_ + _11_