Light Dependent Reactions

Select all of the following that are NOT products of the light dependent reactions.

• Oxygen

• NADPH

• ATP

• Glucose

• Carbon dioxide

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

Tags

NGSS.HS-LS1-5

Where do the light reactions happen?

• mitochondria membrane

• thylakoid membrane in the grana

• stroma

• central vacuole

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

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

• NAD and NADPH

• NADP + and Glucose

• NADPH and ATP

• Oxygen and NADPH

Tags

NGSS.HS-LS1-5

What supplies the electron that is lost in PS II?

• oxygen
• water
• glucose
• rubisco

H+ move from a high concentration in the space to a low concentration in the stroma by which process?

• Chemiosmosis

• Photosmosis

• Diffusion

• Active Transport

If all four plants were watered daily but placed in a closet, receiving no sunlight, what process would NOT occur?

• Ingestion of carbon dioxide
• Filtration of water through the soil
• Photosynthesis
• Water absorbtion

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Protons (H+) move into the thylakoid due to

• the concentration gradient in the mitochondria

• gravity

• chemiosmosis

• the energy released by the movement of electrons through the electron transport chain

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.

Tags

NGSS.HS-LS1-5

What does light do when it strikes the chlorophyll molecules of photosystems I and II?

• Light causes glucose to be synthesized directly inside the chlorophyll molecules of the photosystems.

• Light causes electrons to get excited (gain energy) and travel down the electron transport chain embedded in the thylakoid membrane.

• Light causes the conversion of water into carbon dioxide, oxygen, and electrons.

• Light directly causes carbon dioxide to attach to RuBP during the carbon fixation stage of the Calvin Cycle.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5