(Cell) Light Reactions Flashcards

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1
Q

Step 1

A

Light(photons) excites electron in photosystem 2(PS2) to the NADP reductase; produces NADPH from NADP+ and H+

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2
Q

Step 2

A

Electron is pulled from photosystem 1(PS1) to photosystem 2(PS2)

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3
Q

Step 3

A

Electrons are produced from photolysis of water, in which oxygen and hydrogen ions are produced

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4
Q

Step 4

A

Hydrogen ions are drawn into the inner thylakoid through the cytochrome

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5
Q

Step 5

A

The chemiosmotic gradient created by the amount of hydrogen ions in the inner thylakoid causes the hydrogen ions to leave via the proton channel protein

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6
Q

Step 6

A

ATP is produced on the ATP synthase, which is then bumped out by the leaving proton

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7
Q

Step 7

A

The leaving hydrogen ions produce NADPH with the electron from photosystem 2(PS2) and NADP+

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8
Q

What is the reaction that uses light to split water called?

A

Photolysis reaction

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9
Q

What is the buildup of hydrogen ions in the inner thylakoid known as?

A

A chemiosmotic gradient

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10
Q

Where do light reactions take place?

A

Thylakoid

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11
Q

What is NADP+?

A

A coenzyme that carries H+

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12
Q

Autotrophs vs. Heterotrophs

A

Autotrophs are “self-feeders”, sustaining themselves without eating anything derived from other living beings
Heterotrophs obtain their organic material by the second major mode of nutrition

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13
Q

What pair of chlorophyll a molecules are located in Photosystem II?

A

P680

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14
Q

What pair of chlorophyll a molecules are located in Photosystem I?

A

P700

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