What is the function of NADP+?

It is a light-reflecting pigment

It acts as long-term energy storage

What is the purpose of splitting water in PS2 of the light dependent reaction?

Provides e- for PS2 and H+ for the thylakoid space

After light excites the electron and they leave Photosystem II to travel down the first electron transport chain, how are these electrons replaced to Photosystem II?

Water is split, and the electrons are given to the chlorophyll molecules of photosystem II.

Oxygen is reduced and the electrons are given to the chlorophyll molecules of photosystem II.

Carbon dioxide is split, and the electrons are given to the chlorophyll molecules of photosystem II.

Hydrogen undergoes fusion, and the electrons are given to the chlorophyll molecules of photosystem II.

The splitting of water at photosystem II is known as ____ and results in the production of _____.

photolysis: oxygen, hydrogen ions (protons), and electrons that are given to photosystem II.

Chemiolysis: carbon dioxide, G3P, and electrons that are given to photosystem II.

the Calvin cycle: carbon dioxide, G3P, and electrons that are given to photosystem II

chemiosmosis: oxygen, hydrogen ions (protons), glucose and electrons that are given to photosystem II.

As the electrons travel from photosystem II down the first electron transport chain, their energy is used to….

pump hydrogen ions into the thylakoid space, producing a concentration gradient that will later be used by ATP synthase to form ATP.

form oxygen, water, NADPH, and glucose.

pump hydrogen ions into the stroma, producing a concentration gradient that will later be used by an enzyme to form ADP and phosphate.

Form NADH and ADP for the Calvin cycle

Why do hydrogen ions flow from the thylakoid space to the stroma through ATP synthase?

They flow passively from the high to low concentration via facilitated diffusion. As they flow through ATP synthase, the enzyme spins and produces ATP.

They are pumped actively through the ATP synthase. This uses ATP energy and causes the production of ADP and phosphate.

They flow through the Calvin cycle and produce light.

Hydrogen ions do not actually flow from the thylakoid space to the stroma. They flow the opposite way.

Where are photosystems located?

Chloroplast phospholipid bilayer (membrane)

The reaction- center chlorophyll of photosystem is known as P700 because

the pigment best at absorbing light with a wavelength of 700 nm

there are 700 chlorophyll molecules in the center

there are 700 photosystem I components to each chloroplast

it absorbs 700 photons per microsecond

What is one function of having other pigments besides chlorophyll in the chloroplast?

to absorb different wavelengths than the chlorophyll

to block damaging wavelengths of light

to provide different colors to the leaves

to transfer energy to a separate photosystem beside the one using chlorophyll a and b.

Light dependent reaction

Authored by Peter Lower

Science

12th Grade

NGSS covered

Used 61+ times

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MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which of the following is NOT a product of the light reactions?

Oxygen

NADPH

ATP

Glucose (Sugar)

Tags

NGSS.HS-LS1-5

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What are the two products of the light reactions that are needed for the calvin cycle?

NAD and NADPH

NADP + and Glucose

NADPH and ATP

Oxygen and NADPH

Tags

NGSS.HS-LS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Thylakoids are arranged in stacks called ____.

Lamellae

Stroma

Granum

Lumen

Tags

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The gel-like material that surrounds the grana is called ____

lamellae

granum

thylakoid

stroma

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

ATP gets formed in the light dependent reaction by which process?

Chemiosmosis

Photosmosis

Diffusion

Active Transport

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What supplies the electrons that are lost in photosystem I (PSI)?

the electrons from PS II

water

glucose

electrons from photolysis

Hydrogen

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Chlorophyll absorbs _ and ___ light from the light.

purple and green

red and blue

black and orange

yellow and green

Tags

NGSS.HS-LS1-5

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Light dependent reaction

Which of the following is NOT a product of the light reactions?

What are the two products of the light reactions that are needed for the calvin cycle?

Thylakoids are arranged in stacks called ____.

The gel-like material that surrounds the grana is called ____

ATP gets formed in the light dependent reaction by which process?

What supplies the electrons that are lost in photosystem I (PSI)?

Chlorophyll absorbs _____ and _______ light from the light.

What is the function of NADP+?

What is the purpose of splitting water in PS2 of the light dependent reaction?

What drives the formation of ATP by ATP synthase?

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Chlorophyll absorbs _ and ___ light from the light.