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16 Nov 2019

1. Which of the following steps of photosynthesis are paired with the correct location for which it occurs.

A.

Calvin Cycle / Granum

B.

Calvin Cycle / Matrix

C.

Light Reactions / Thylakoid Membrane

D.

Light Reactions / Stroma

E.

Calvin Cycle / Thylakoid Membrane

2. Which of the following statements about the Calvin Cycle are true?

A. The Calvin Cycle produces ATP and NADPH that are used in the Light Reactions

B. The Calvin Cycle occurs on a thylakoid membrane.

C. The Calvin Cycle is the same process as Photosystem I.

D. The Calvin Cycle must occur at night

E. In order to produce one molecule of sugar, the Calvin Cycle must occur twice.

3. Place in the correct order in which they occur during the light reactions.

NADP+ is reduced to form NADPH

A molecule of water is split to produce electrons

ATP Synthase phosphorylates ADP and Pi into ATP

Photosystem II absorbs a photon of light

Photosystem II's primary electron acceptor is reduced

Photosystem I absorbs a photon of light

Photosystem II passes electrons to Photosystem I using an electron transport chain

Photosystem I passes its electrons to NADP+

4. Place the steps of the Calvin Cycle in the correct order.

Carbon (CO2) fixation

Reduction

Regeneration of RuBP

5. Using the general equation for photosynthesis, which of the substances is oxidized and has electrons taken from it? (Write out the name of the substance, not the formula)

6CO2 + 6H2O + light -> C6H12O6 + 6O2
Carbon Water Light Glucose Oxygen
Dioxide

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Bunny GreenfelderLv2
8 Oct 2019
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Related questions

Matching: Choose the BEST answer to complete each matchingstatement. There is one correct answer for each fill in the blank.Use of letters to answer is fine.

Choices A). Oxygen F). Water K.) ADP P.) AbsorbU.) Stroma of Chloroplast B.) NADP G.) NADPH L). ATP Q.) ReleaseV.) Transpiration C.) Close H.) Open M.) Nitrogen R.) Glucose W.)Thylakoid Membranes D.) Electrons I.) Stomata N.) AMP S.) SunlightX.) Light Reaction E.) Carotenoids J.) Carbon Dioxide O.)Chlorophyll T.) Dark Reaction Y.) Hydrogen ion

1. List the reactants of the light reactions.

2. List the products of the light reactions

3. List the reactants of the dark reactions (Calvin BensonCycle).

4. List the products of the dark reactions (Calvin BensonCycle).

5. In the light reactions (a) is split releasingthese three things (b)

6. (a) for the dark reactions (Calvin Benson cycle) is obtainedby opening the (b) .

7. (a) is lost to the environment through the open (b)

8. The light reactions occur on/in the .

9. The dark reactions (Calvin Benson cycle) occur on/in the.

10.(a) absorb additional wavelengths of light and protect (b)from damage.

35. During the complete catabolism of glucose, CO2 is released during ____ (note: Krebs cycle = citric acid cycle)
A. glycolysis only
B. Krebs cycle only
C. Krebs cycle and oxidation of pyruvate
D. oxidation of pyruvate only
E. Krebs cycle, glycolysis and oxidation of pyruvate

36. A reaction center, a primary electron acceptor and many chlorophyll molecules are all components of a/an _________ .
A. fluorescence center
B. photosystem
C. electron transport chain
D. carbon-fixation unit
E. electromagnetic spectrum

37. Which of the following generates the most reducing power?
A. anabolism of isoleucine
B. Calvin cycle
C. glycolysis
D. citric acid cycle
E. Hobbes reactions

38. After completion of the citric acid cycle (Krebs cycle), most of the usable energy from the original glucose molecule is in the form of _____.

A. acetyl CoA
B. ATP
C. NADH
D. CO2
E. FADH2

39. The light reactions of photosynthesis occur in:
A. all membranes of the chloroplast
B. the stroma
C. the matrix
D. the tonoplast membrane
E. thylakoid membranes

40. When chloroplasts are illuminated with white light, chlorophyll primarily absorbs:
A. photons of all wavelengths
B. green light only
C. red light only
D. blue light only
E. red and blue light

Photosynthesis

Light Reactions:

Photosynthesis is the process of reducing/oxidizing (circle one) _____________________ to produce ___________________. This overall reduction-oxidation reaction requires _________________ to begin the flow of __________________. Photosynthetic ____________________ absorb light energy and are located in ___________________ found embedded within the membranes of __________________. The most prevalent one include the ___________________ which reflect ________________ light and absorb the other wavelengths of light. Accessory pigments include ___________________. When light energy is absorbed in photosynthesis, electrons of pigment molecules become _________________ and move into higher potential energy _______________. When the electrons return to their previous position, _____________ is passed to the ______________________ pigment molecule. Electrons within this pigment molecule move to a high potential energy state and are Γ’Β€ΒœgrabbedҀ by _________________________ chains. Electrons from photosystem II are passed to ______________________. Electrons from photosystem I are passed to _________________. As electrons move in the electron transport chain associated with photosystem I/II (circle one), the energy released is used to power ___________ pumps and __________ is produced via a process known as ________________________. Photosystem I/II (circle one) electrons must be replaced to continue the reaction so ____________ is split for its electrons. The products _______________ & _______________ then proceed to the ______________________ cycle.

Calvin Cycle:

The Calvin Cycle can be broken into 3 main series of reactions. In the first group, known as the __________________ step, ______________________ combines with 3 molecules of ____________________ to form 6 molecules of _____________________. This reaction is catalyzed by ___________________. ________________ can act as a competitive inhibitor of this enzyme, shutting down this step in a process known as ______________________________. In the second series of reactions known as the __________________ steps, the molecules produced in the previous step get oxidized/reduced (circle one). The source of electrons is _________from the light reactions. This step is endergonic/exergonic (circle one) and thus requires _______ from the light reactions. Six molecules of _____________________ are produced, ______ (#) of which will continue in biosynthetic pathways to produce __________________. The remaining molecules will then enter the ______________________ steps which require _____________ from the light reaction. In this step, 3 molecules of _______________ are produced so that this cyclic reaction can continue.

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