29 Questions
What are the thylakoids?
Membrane-bound compartments inside chloroplasts
What role do chloroplasts play for life on Earth?
Oxygen release through photosynthesis
Where does photosynthesis take place in plant cells?
Stroma
What is the function of the thylakoid lumen?
ATP synthesis through chemiosmosis
What are grana in chloroplasts?
Stacks of structures called thylakoids
What is the function of the stroma in chloroplasts?
Calvin cycle and enzyme storage
Where do the light-dependent reactions of photosynthesis take place in plants?
Thylakoid membranes
Which molecule is released as a byproduct of the process of photosynthesis?
Oxygen
What are the two molecules made in the light-dependent reactions that are needed for the next stage of photosynthesis?
ATP and NADPH
What is the special pair of chlorophyll molecules at the core of photosystem I called?
P700
What type of photophosphorylation involves using light energy to make ATP from ADP?
Non-cyclic photophosphorylation
What happens to the oxygen molecule produced during the light-dependent reactions?
It is released outside the leaf through the stomata.
Which part of the chloroplast contains the thylakoid membranes where the light-dependent reactions occur?
Granum
What role do photosystems play in the light reactions?
Harvesting light energy and initiating electron transport.
What are the two types of photosystems involved in the light-dependent reactions?
Photosystem I (PSI) and Photosystem II (PSII)
What happens to P680 after it loses its electron during the light-dependent reactions?
It becomes positively charged (P680+).
What is the main function of thylakoid lumen in chloroplasts?
It is the site of ATP synthesis through chemiosmosis
What is the main role of stroma in chloroplasts?
It contains the enzymes needed for the Calvin cycle
Where do the light-dependent reactions of photosynthesis take place?
Grana
What are grana in chloroplasts made up of?
Thylakoids
What is the main function of chloroplasts in sustaining plant growth and crop yield?
Production of energy through photosynthesis
What is the main function of outer membrane of chloroplasts?
Freely permeable to small molecules
What is the main purpose of the light-dependent reactions in photosynthesis?
Create ATP and NADPH for the next stage of photosynthesis
Where do the light-dependent reactions of photosynthesis take place in plants?
Thylakoid membranes
What is the function of the special pair of chlorophyll molecules found at the core of photosystem II?
Harvest light energy
What happens to the oxygen molecule produced during the light-dependent reactions?
It is released outside the leaf through the stomata
What is the role of photosystems in the light reactions?
Harvest light energy and play a key role in the light reactions
What is the special pair of photosystem I called?
P700
What happens to P680 after it loses its electron during the light-dependent reactions?
It becomes positively charged (P680+)
Test your knowledge about chloroplasts, the chlorophyll-containing organelles in plant cells that play a vital role in photosynthesis and energy production. Learn about the structure and functions of chloroplasts.
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