9.3 The Process of Photosynthesis Lesson Quiz

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adding oxygen to the atmosphere

Although animals do not perform photosynthesis, their food supply depends on the sugars that photosynthesis produces. What is the other significant benefit to animals that photosynthesis provides?

in the light-independent reactions, where 3-carbon sugars exit the cycle

Betel is developing a model of the process of photosynthesis. One of her goals is to identify the products of photosynthesis that will later be used to assemble sugars, lipids, amino acids, and other essential compounds for the organisms. In which part of the model should these products be identified?

An arrow that shows the electrons moving through electron carriers and being received by NADP+

Briana is studying a model of the light-dependent reactions of photosynthesis. She notices the electrons that the water molecules release. She asks, "Will the electrons build up in the chloroplast?" Which addition to the diagram would be most useful for answering Briana's question?

The energy source is high-energy bonds in sugar molecules

During the light-independent reactions of photosynthesis, carbon dioxide is combined with hydrogen to form sugars. What is the energy source, if any, that allows this process to occur?

NADPH / sugars

During this process, energy from ATP and __________ is used to assemble high-energy __________

electron transport chain

Electrons pass along the __________

the Calvin cycle

The light-independent reactions of photosynthesis are also known as __________

The energy source is the concentration difference of hydrogen ions across the membrane

The thylakoid membrane contains a protein called ATP synthase. As hydrogen ions pass through the protein, ADP and a phosphate group are combines to form ATP. What is the direct energy source, if any, for the movement of hydrogen ions and the formation of ATP?

electrons

They absorb sunlight and generate high energy __________

photosystems

Thylakoids contain clusters of chlorophyll and proteins known as __________

Carbon dioxide is used to assemble sugar molecules

When the light-independent reactions are occurring, gases diffuse between the chloroplast and the air that surrounds the plant. Why is gas diffusion essential during this stage of photosynthesis?


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