8 Questions
In plant cells, what is the role of electron carriers?
To transport high-energy electrons from chlorophyll to other molecules.
What is the compound that accepts and holds high-energy electrons, along with a hydrogen ion?
NADP+
What is the compound formed when NADP+ accepts two high-energy electrons and a hydrogen ion?
NADPH
How is the energy of sunlight trapped in chemical form?
Through the conversion of NADP+ into NADPH
What can NADPH carry to chemical reactions elsewhere in the chloroplast?
High-energy electrons produced by light absorption in chlorophyll
What are electron carriers and what is their role in plant cells?
Electron carriers are compounds that transport high-energy electrons from chlorophyll to other molecules. They accept a pair of high-energy electrons and transfer them, along with most of their energy, to another molecule. In plant cells, electron carriers like NADP+ play a crucial role in trapping the energy of sunlight in chemical form and transporting it to chemical reactions elsewhere in the chloroplast.
How does NADP+ convert into NADPH?
NADP+ converts into NADPH by accepting and holding two high-energy electrons, along with a hydrogen ion (H+). This conversion allows some of the energy of sunlight to be trapped in chemical form.
What is the ultimate fate of the high-energy electrons carried by NADPH?
The high-energy electrons carried by NADPH are used to help build sugars like glucose. They are involved in the chemical reactions that synthesize glucose and other organic compounds in the chloroplast.
Test your knowledge on electron carriers in plant cells and their role in transferring high-energy electrons from chlorophyll to other molecules. Explore the importance of these compounds in facilitating energy transfer within the chemical processes of photosynthesis.
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