What takes place in the thylakoid?
What takes place in the thylakoid?
The chloroplast is involved in both stages of photosynthesis. The light reactions take place in the thylakoid. There, water (H2O) is oxidized, and oxygen (O2) is released. The electrons that freed from the water are transferred to ATP and NADPH.
What do thylakoid membranes do?
Thylakoids are the internal membranes of chloroplasts and cyanobacteria, and provide the platform for the light reactions of photosynthesis.
Which phase takes place within the thylakoid membranes?
The light-dependent reaction takes place within the thylakoid membrane and requires a steady stream of sunlight, hence the name light-dependent reaction. The chlorophyll absorbs energy from the light waves, which is converted into chemical energy in the form of the molecules ATP and NADPH.
What does the thylakoid membrane absorb?
A thylakoid is a sheet-like membrane-bound structure that is the site of the light-dependent photosynthesis reactions in chloroplasts and cyanobacteria. It is the site that contains the chlorophyll used to absorb light and use it for biochemical reactions.
Where is thylakoid found?
Photosynthetic membranes, or thylakoids, are the most extensive membrane system found in the biosphere. They form flattened membrane cisternae in the cytosol of cyanobacteria and in the stroma of chloroplasts.
What are the end products of light reaction?
What are the end products of light reactions?
- Hint: The process of using the energy in sunlight to make food (glucose) is known as photosynthesis.
- Complete answer:
- Therefore, the end products are ATP and NADPH.
- Note: The ATP and NADPH from the light-dependent reactions are used to make sugars in the Calvin cycle.
What are the 3 main types of chlorophylls?
Chlorophylls are classified into three types, i.e., bacteriochlorophylls, chlorophylls, and Chlorobium chlorophylls.
What is the difference between grana and thylakoid?
Grana are found in the stroma of the chloroplast, which is connected by stroma thylakoids. The main difference between grana and thylakoid is that grana are the stacks of thylakoids whereas thylakoid is a membranebound compartment which is found in chloroplast.
What is the difference between photosystem 1 and 2?
Photosystem I (PS I) and photosystem II (PS II) are two multi-subunit membrane-protein complexes involved in oxygenic photosynthesis. The main difference between photosystem 1 and 2 is that PS I absorbs longer wavelengths of light (>680 nm) whereas PS II absorbs shorter wavelengths of light (<680 nm).
How is the thylakoid membrane involved in making ATP?
All electron-transport processes occur in the thylakoid membrane: to make ATP, H+ is pumped into the thylakoid space, and a backflow of H+ through an ATP synthase then produces the ATP in the chloroplast stroma.
Do thylakoids have double membranes?
Plant chloroplasts are large organelles (5 to 10 μm long) that, like mitochondria, are bounded by a double membrane called the chloroplast envelope (Figure 10.13). The thylakoid membrane forms a network of flattened discs called thylakoids, which are frequently arranged in stacks called grana.
Does thylakoid have double membrane?
Plant chloroplasts are large organelles (5 to 10 μm long) that, like mitochondria, are bounded by a double membrane called the chloroplast envelope (Figure 10.13). In addition to the inner and outer membranes of the envelope, chloroplasts have a third internal membrane system, called the thylakoid membrane.
What is the process that occurs in the thylakoid?
Reactions performed in the thylakoid include water photolysis, the electron transport chain, and ATP synthesis. Photosynthetic pigments (e.g., chlorophyll) are embedded into the thylakoid membrane, making it the site of the light-dependent reactions in photosynthesis.
What takes place inside chloroplast?
The chloroplast is the organelle in which photosynthesis takes place. Inside the chloroplast there are disk like structures called thylakoids arranged in stacks called granum. The light dependent reaction takes place across the membranes of the thylakoids while the Calvin Cycle takes place in the stroma,…
What is the thylakoid located in a cell?
Thylakoid is an organelle found in the chloroplasts as well as in cyanobacteria . It consists of a membrane which is surrounded by a thylakoid lumen. This thylakoid in the chloroplast usually forms stacks and which are called grana. The grana are linked with other grana by intergranal lamellae to form single functional compartments.
What happens in the thylakoid membrane during photosynthesis?
Both stages of photosynthesis take place in chloroplasts . The light reactions take place in the thylakoid membranes, and the Calvin cycle takes place in the stroma. The light reactions capture energy from sunlight, which they change to chemical energy that is stored in molecules of NADPH and ATP .