welcome to today’s exciting topic…. general photosyn thesis light dependent more light dependent...

Welcome to Welcome to

Today’s exciting Today’s exciting topic….topic….

General Photosynthesis

Light Depende

nt

More Light

Dependent

Light Independent

Anything Goes

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PowerPoint Jeopardy Final!!

Name this!

Stroma!!

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What are the outputs of photosynthesis?

a) CO2, water, sugar

b) O2 and sugar

c) CO2, O2, and sugar

d) ATP and NADPH

B. O2 and sugar!!

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Why are chloroplasts found mostly in the leaves of plants?

• A. The large surface area of leaves allows for maximum light absorption

• B. The waxy coating on the surface of leaves helps prevent evaporation

• C. Chlorophyll interferes with the xylem and phloem in the stems and trunks of plants

• D. The large surface area of leaves allows for contact with oxygen

A. The large surface area of leaves allows for maximum light absorption!

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Most organisms use an energy storage molecule called…

• A. Adenosine Tri Phosphate

• B. DNA

• C. Adenine Tri Phosphate

• D. Chlorophyll

•A. Adenosine Tri Phosphate! (ATP)

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Please write the balanced equation for photosynthesis!

6CO2+6H20+Light C6H12O6 + 6O2

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What is this?

A) Hydrogen Ions

B) Photons

C) Chlorophyll

D) Vitamin B

C. Chlorophyll!!

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What is the purpose of Light Dependent Reactions?

To produce ATP and NADPH!

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The final electron acceptor for light reactions is…

• A) FADH+

• B) Water

• C) Oxygen gas

• D) NADP+

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D. NADP+!!

When light strikes chlorophyll, electrons are replaced by what?

A) H+ ions

B) Splitting of water

C) ATP

D) Formation of glucose

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B. Splitting of water!!

Which of the following is an accurate summary of chemiosmosis?

A) Oxygen diffuses down the concentration gradient out of the stroma into the grana

B) Hydrogen atoms diffuse down the concentration gradient out of the chloroplasts into the thylakoid

C) Oxygen atoms move up their concentration gradient through active transport out of the thylakoid into the stroma

D) Hydrogen atoms diffuse down concentration gradient out of thylakoid into the stroma

D. Hydrogen atoms diffuse down concentration gradient out of thylakoid into the stroma!!

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What is this whole structure?

A.StromaB.ThylakoidC.GranumD.Grana

C. Granum!!

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What are the inputs of light dependent reactions?

A) CO2 + glucoseB) O2 + glucose + lightC) CO2 + glucose + lightD) H2O + light

D. H2O + light!!

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Which is the first step of light dependent reactions?

A) Excited electrons move from photosystem I to photosystem II

B) Excited electrons move from photosystem II to photosystem I

C) Hydrogen ions move through ATP synthase, creating ATP

D) Light energy reaches photosystem II, causing water molecules to split

D. Light energy reaches photosystem II, causing water molecules to split!!

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What is the name of the protein that converts NADP+ to NADPH?

Ferrodoxin!!

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_________ connects photosystems and releases energy in the form of H+ ions to produce ATP.

• A) water molecule

• B) Ferrodoxin

• C) Electron Transport ChainD) Release of H+ after water is split

C. Electron transport chain!!

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Name the outputs of light reactions that are used in the Calvin Cycle.

ATP and NADPH!

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In the Calvin cycle, the carbon from CO2 is released as_____.

A) Glucose

B) Oxygen

C) Water

D) Photons

A. Glucose!!

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The reactions of the Calvin cycle are not directly dependent on light, but they usually do not occur at

night. Why not?

A) It depends on products of light reactions

B) CO2 is not available at night

C) It is too cold at night for the reactions to take place

D) Most plants do not make the 4-carbon compounds that would be needed for the Calvin cycle to occur at night.

A. It depends on products of light reactions!!

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The energy acquired in photosynthesis is used to make glucose. Where is the glucose made in plants?

A)thylakoid

B)Thylakoid membrane

C)stroma

D)granum

C. Stroma!!

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Which molecules from the Calvin cycle are re-used in light dependent reactions?

A) ATP and NADPH

B) Glucose

C) ADP and NADP+

D) CO2

C. ADP and NADP+!!

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If a plant does not receive carbon dioxide, which process can it not directly perform?

• A) Light reactions

• B) Calvin cycle

• C) Splitting water

• D) Create ATP from ADP

B. Calvin cycle!!

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Which of the following keep their stomata closed only during hot days?

• A) CAM plants

• B) C3 plants

• C) C4 plants

• D) All plants

C. C4 plants!!

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What is the name of the large molecule that can be a product of photosynthesis by adding glucose molecules together?

A.LipidsB.StarchC.MonosaccharideD.Carbon Dioxide

B. Starch!!

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What are the outputs of the Calvin Cycle?

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Glucose!!

Predict the photosynthetic pathway that might be used by a saguaro cactus.

• A. C4 pathway

• B. C3 pathway

• C. CAM

• D. Nitrogen fixation

C. CAM!!

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FINAL JEOPARDY!!Write on sheet of paper how much your group gambles

Put names of everyone in group and group #!

Fold and HAND IN!!

Write answer to final question on separate sheet of paper with group # on it

Final Jeopardy Question:Label the following diagram with the word bank below:

A. H2O B. ATP C. CO2 D. O2 E. NADPH F. Glucose G. Light

H. NADP+ I. ADP

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Final Jeopardy Question:

1. H2O (A)2. Light (G)3. O2 (D)4. ADP (I)5. NADP+ (H)6. ATP (B)7. NADPH (E)8. CO2 (C)9. Glucose (F)