Photosynthesis Notes

Multiple Select

What are the reactants (what is needed) for photosynthesis?

• glucose

• light

• water

• carbon dioxide

• oxygen

Multiple Choice

Photosynthesis is shown here. What are the chemicals represented by the Y?

• H₂O +O₂

• H₂O + CO₂

• C₆H₁₂O₆ + O₂

• C₆H₁₂O₆ + CO₂

• energy from the sun

Multiple Choice

What are the two main parts of a chloroplast involved in photosynthesis?

• Grana and Stroma

• Chlorophyll and Thylakoid

• Cytoplasm and Nucleus

• Mitochondria and Ribosome

Multiple Choice

Most plants appear green because chlorophyll

• absorbs green light.
• absorbs violet light.
• does not absorb green light.
• does not absorb violet light.

This happens during photosystem II and results

Photosystem II (PSII) - is the first step of the light dependent reactions:

• Function: Splits water molecules to release oxygen, protons (𝐻+), and electrons

Photosystem I (PSI) - is the second to last step of the light dependent reactions:

• Function: Uses light energy to re-energize electrons and reduce NADP+ to NADPH. 

Multiple Choice

Imagine a vast field of sunflowers soaking up the sunlight. What is the primary purpose of the light-dependent reactions happening in the leaves of these sunflowers during photosynthesis?

• To produce glucose

• To generate ATP and NADPH needed for the Calvin cycle

• To absorb carbon dioxide from the atmosphere

• To release oxygen into the atmosphere

Multiple Choice

Imagine a plant in your backyard. What is the role of light in Photosystem II within the chloroplasts of this plant's leaves?

• It splits water molecules to release oxygen.

• It directly synthesizes ATP.

• It reduces NADP+ to NADPH.

• It excites electrons to a higher energy level.

Multiple Choice

What is the role of chlorophyll in photosystems?

• To trap energy from the sun

• To release oxygen

• To absorb carbon dioxide

• To produce glucose

Categorize

Options (6)

water

NADP⁺

ADP

oxygen

NADPH

ATP

Organize these options into the right categories for a

light-dependent reaction.

Inputs

Outputs

Multiple Choice

What is the role of G3P in the Calvin Cycle?

• It is converted to glucose

• It is used to produce ATP

• It is a waste product

• It is converted to RuBP

Multiple Choice

What is the main purpose of the Calvin Cycle in the light-independent reactions?

• To produce glucose

• To absorb sunlight

• To release oxygen

• To convert ATP to ADP

Categorize

Options (6)

sugar

NADP⁺

ADP

carbon dioxide

NADPH

ATP

Organize these options into the right categories for a

light-independent reaction.

Outputs

Inputs

Multiple Choice

The process of an organism that makes its own food using chemical instead of sunlight in photosynthesis?

• Chemosynthesis

• Photosynthesis

• Cellular Respiration

• Enzyme reaction

Multiple Choice

What happens to the stomata when a plant is too hot or dry?

• They open to release more water

• They close to conserve water

• They become larger

• They disappear completely

Multiple Select

What are the two types of alternative pathways in plants to avoid photrespiration?

• CAP

• C4

• C3

• C2

• CAM

Multiple Choice

What is the process called that allows cacti and pineapples to open their stomata at night?

• CAM

• C3 Photosynthesis

• C4 Photosynthesis

• Stomatal Regulation

Multiple Choice

What is the advantage of C4 photosynthesis in plants like corn and sugar cane?

• It allows them to grow faster

• It helps them survive in dry conditions

• It enables them to use less water

• It increases their sugar production