light dependent reaction Flashcards

1
Q

what is the light dependent reaction?

A

the Light dependent reaction is the initial part of photosynthesis.

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2
Q

what does the light dependent reaction need to start?

A

light and water is needed for the reaction to happen.

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3
Q

what does the light dependent reaction produce?

A

it produces ATP, NADPH, and oxygen.

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4
Q

where does the light dependent reaction happen?

A

in the thylakoid membranes of the chloroplasts

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5
Q

what is the equation for the light dependent reaction?

A

H2O ⇒ H+ + E- + O2
E- = electrons

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6
Q

what is the first step of the light dependent reaction?

A

Water in the cell is split into hydrogen, oxygen, and electrons. Which is used in the reaction. The oxygen is released into the atmosphere.

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7
Q

what is the second step of the light dependent reaction?

A

The hydrogen goes into ATP synthase creating a charge that allows ATP to be made. the hydrogen binds with ADP and a phosphate to make ATP.

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8
Q

what is the fourth step of the light dependent reaction?

A

Light hits photosystem 2, heating up an electron from the water.

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9
Q

what is the fifth step of the light dependent reaction?

A

The electron goes along the electron transport chain (E.T.C)

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10
Q

what is the sixth step of the light dependent reaction?

A

The electron goes to photosystem 1, but its needs to get hit again with light to recharge, so it gets hit again.

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11
Q

what is the seventh step of the light dependent reaction?

A

The electron gets hit with light, and is picked up by NADP+, a carrier protein.

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12
Q

what is the eighth step of the light dependent reaction?

A

The electron and the hydrogen ion from the water is used to make NADPH with NADP+.

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13
Q

what is the ninth step of the light dependent reaction?

A

light and water start the process over again.

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14
Q

overall, what does the light dependent reaction do?

A

Light dependent reactions use water, light, and carbon dioxide to make ATP and NADPH

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15
Q

did you look at the photo of the light dependent reaction in your notes?

A

hopefully

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