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Output of Light Reaction

Light is requ...

Question

Light is required for the light dependent reactions because

A

it is the source for electrons

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B

it splits the water molecule

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C

it energizes electrons in the reaction center

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D

it splits ATP molecules which generates the energy necessary to power the light independent reactions

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Solution

The correct option is C
it energizes electrons in the reaction center

This causes photexcitation of the chlorophyll molecule which releases the electrons and which inturn helps in the formation of ATP.

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Q. In the light reaction the energy is absorbed by chlorophyll. The absorbed energy is used in splitting the water molecule into its two components and releasing electrons

(H_{2} O ⟶ 2 H^{+} + O_{2} + 2 e)

, this reaction is known as :

Which of the following molecules is produced during the light-dependent reactions of photosynthesis and used in the light-independent reactions?

Q. Which of the following products from light dependent reaction is used as a source of energy in the light independent reactions?

Q. Complete the following by filling in the blanks numbered 1 to 10 with the appropriate word/term:
Photosynthesis involves light reaction and dark reaction. During light reaction, the chlorophyll present in the (1) _______________ gets activated by absorbing light energy. This energy splits (2) _______________ molecules to (3) _______________ and oxygen and releases two electrons. This process is called (4) _______________ . The (5) _______________ ions are picked up by NADP to form (6) _______________ . The ADP is converted to (7) _______________ . This process is called (8) _______________ . During the dark phase, the compound produced at the end of the light reaction reacts with carbon dioxide to form (9) _______________ . This product is converted to starch. The process is called (10) _______________ .

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Which of the following are common to only the light-dependent reactions?

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