Podcast
Questions and Answers
What is the role of the electron transport chain in photosynthesis?
What is the role of the electron transport chain in photosynthesis?
Where does photon transfer occur in the photosynthetic process?
Where does photon transfer occur in the photosynthetic process?
What happens when P700 in PS I is photoactivated?
What happens when P700 in PS I is photoactivated?
Where are the excited electrons from P680 of PS II transferred to replace lost excited electrons from P700?
Where are the excited electrons from P680 of PS II transferred to replace lost excited electrons from P700?
Signup and view all the answers
What catalyzes the transfer of electrons from ferredoxin to NADP+ in photosynthesis?
What catalyzes the transfer of electrons from ferredoxin to NADP+ in photosynthesis?
Signup and view all the answers
What is the process of adding phosphate to ADP to form ATP by using the energy of sunlight called?
What is the process of adding phosphate to ADP to form ATP by using the energy of sunlight called?
Signup and view all the answers
Where does the process of photolysis of water occur?
Where does the process of photolysis of water occur?
Signup and view all the answers
Which pigment absorbs the photon (light energy) and transfers it to the reaction center of PS II?
Which pigment absorbs the photon (light energy) and transfers it to the reaction center of PS II?
Signup and view all the answers
What is the main purpose of photolysis of water in photosynthesis?
What is the main purpose of photolysis of water in photosynthesis?
Signup and view all the answers
In which part of the photosynthesis process are hydrogen ions released into?
In which part of the photosynthesis process are hydrogen ions released into?
Signup and view all the answers
Study Notes
Electron Transport Chain in Photosynthesis
- Functions to transfer high-energy electrons released from chlorophyll during light-dependent reactions.
- Generates a proton gradient used to produce ATP and NADPH for the Calvin cycle.
Photon Transfer in Photosynthesis
- Occurs primarily in the thylakoid membranes of chloroplasts where light energy is captured by pigments.
Photoactivation of P700 in PS I
- When P700 absorbs light, it becomes excited and donates electrons to an electron acceptor, initiating the transfer of electrons in the second phase of photosynthesis.
Replacement of Excited Electrons in PS II
- The excited electrons lost from P700 are replaced by electrons derived from the oxidation of water, which originates from the splitting of water molecules during photolysis.
Catalyzing Electron Transfer to NADP+
- The enzyme ferredoxin-NADP+ reductase catalyzes the transfer of electrons from ferredoxin to NADP+, forming NADPH.
Phosphorylation Process in Photosynthesis
- The process of adding inorganic phosphate to ADP to form ATP using sunlight energy is known as photophosphorylation.
Location of Photolysis of Water
- Photolysis occurs within the thylakoid lumen of chloroplasts, where water molecules are split into oxygen, protons, and electrons.
Pigment Absorbing Photon Energy in PS II
- Chlorophyll a, specifically in the P680 reaction center, absorbs photons and transfers this energy to initiate the photosynthetic process.
Main Purpose of Photolysis of Water
- The primary purpose is to replenish electrons lost by chlorophyll, producing oxygen as a byproduct for the atmosphere.
Release of Hydrogen Ions in Photosynthesis
- Hydrogen ions (H+) are released into the thylakoid lumen during the photolysis of water, contributing to the formation of a proton gradient necessary for ATP synthesis.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of chapter 6 photosynthesis with this compressed quiz covering topics like photolysis of water, photophosphorylation, and the importance of these processes in the thylakoid space. Understand the process of adding phosphate to ADP to form ATP using the energy of sunlight.
