9.3 The Process of Photosynthesis Lesson Quiz
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?