NEET Exam > NEET Videos > Biology Class 11 > Non Cyclic Photophosphorylation: Electron Excitation
Non Cyclic Photophosphorylation: Electron Excitation Video Lecture | Biology Class 11 - NEET
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FAQs on Non Cyclic Photophosphorylation: Electron Excitation Video Lecture - Biology Class 11 - NEET
| 1. What is non-cyclic photo-phosphorylation? |  |
Ans. Non-cyclic photo-phosphorylation is a process in photosynthesis where light energy is used to excite electrons, which are then passed through a series of electron carriers to generate ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).
| 2. How does electron excitation occur in non-cyclic photo-phosphorylation? | |
Ans. Electron excitation in non-cyclic photo-phosphorylation occurs when light energy is absorbed by chlorophyll molecules in the thylakoid membrane of chloroplasts. This energy is transferred to electrons, causing them to become excited and move to a higher energy level.
| 3. What is the role of ATP and NADPH in non-cyclic photo-phosphorylation? | |
Ans. ATP and NADPH are both energy carriers that are produced during non-cyclic photo-phosphorylation. ATP is used as a source of energy for various cellular processes, while NADPH is utilized as a reducing agent in the Calvin cycle to convert carbon dioxide into glucose.
| 4. What are the differences between cyclic and non-cyclic photo-phosphorylation? | |
Ans. In non-cyclic photo-phosphorylation, both ATP and NADPH are produced, whereas in cyclic photo-phosphorylation, only ATP is generated. Additionally, non-cyclic photo-phosphorylation involves the transfer of electrons to NADP+ to form NADPH, while cyclic photo-phosphorylation involves the transfer of electrons back to the photosystem I.
| 5. How does non-cyclic photo-phosphorylation contribute to the overall process of photosynthesis? | |
Ans. Non-cyclic photo-phosphorylation is a crucial step in photosynthesis as it produces ATP and NADPH, which are essential for the subsequent dark reactions (Calvin cycle) that convert carbon dioxide into glucose. These energy-rich molecules provide the necessary fuel for the synthesis of carbohydrates, ultimately supporting the growth and development of plants.
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Nov 21, 2024 Last updated |
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