Free Printable Light Dependent Reactions

Worksheets

Light Dependent Reactions

Total questions: 20

Worksheet time: 2hrs 6mins

Name

Class

Date

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

Oxygen

NADPH

ATP

Glucose (Sugar)

Where do the light reactions happen?

mitochondria membrane

thylakoid membrane

stroma

central vacuole

What is the main purpose of the light dependent reactions?

To provide the energy for the calvin cycle

To capture energy and make sugar

To reflect green light

To make sugars

What part of the plant cell performs photosynthesis?

The Mitochondrion

The Nucleus

The Chloroplast

The Cell Wall

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

What gas does the process of photosynthesis release into the atmosphere?

oxygen

carbon dioxide

water

nitrogen

Thylakoids are arranged in stacks called ____.

Lamellae

Stroma

Granum

Glucose

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

lamellae

granum

thylakoid

stroma

Autotrophs (producers) can perform photosynthesis because they have -

Mitochondria

Ribosomes

A Nucleus

Chloroplasts

10.

The principal chemical compound that living things use to store energy is

DNA

ATP

H₂O

CO₂

11.

What supplies the electron that is lost in PS II?

oxygen

water

glucose

rubisco

12.

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

Chemiosmosis

Photosmosis

Diffusion

Active Transport

13.

Leaves look green because.....

they eat their vegetables

to blend into their environment

they contain a molecule named chlorophyll

they are sick

14.

Which of the following equations represents the overall chemical reaction for photosynthesis?

6O₂+ 6H₂O → C₆H₁₂O₆+ 6O₂

C₆H₁₂O₆ + 6H₂O→ 6O₂+ 6O₂

6CO₂+ 6H₂O→ C₆H₁₂O₆+ 6O₂

6O₂ + 6H₂O→ C₆H₁₂O₆ + 6CO₂

15.

Sunlight is used during photosynthesis to-

Break down the xylem

Break down the stomata

Break down the water

Capture the water

16.

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

the electrons from PS II

water

glucose

oxygen

17.

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

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

To produce Oxygen for animals

There is no purpose

18.

It is important to create a concentration of H+ in the thylakoid space so that the H+ can diffuse through_________ to create ______.

ATP synthase, ATP

NADH, NADPH

proton pump, protons

19.

Protons move into the thylakoid due to the

concentration gradient in the stroma

Brownian motion of the protons.

peer pressure of the cool electrons in the stroma.

movement of electrons through the electron transport chain

20.

The role of water molecule in light dependent reaction is to …

Hydrolyse NADP⁺ at the end of the electron transport chain.

Involve directly in the production of ATP.

Replace the excited electron of reaction centre molecule in photosystem II.

Involve directly in Calvin cycle.

100 %

Light Dependent Reactions

Total questions: 20

Worksheet time: 2hrs 6mins

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