What is the function of the thylakoid?


The thylakoid membranes of a chloroplast carry out the light reactions of photosynthesis. These membranes are split up into stacked and unstacked regions called grana and stroma thylakoids.

The thylakoid network in an individual chloroplast is extensive yet small. According to UniProt, the entire network supposedly takes up only a single lumenal compartment, and there is one compartment per chloroplast.

In the usual plant cell, there may be as many as 50 chloroplasts that use these membranes and complete photosynthesis. The chloroplast typically has three membranes including an outer membrane that is permeable, an inner membrane that has transporters, and the system of thylakoid membranes.

The thylakoid membranes enclose something called a lumen. The lumen is simply a system of vesicles that can be connected and are vital to photosynthesis. There are also four types of protein assemblies that are part of the thylakoid membranes including ATP synthase, cytochromes b and f, photosystem I, and photosystem II. Photosystem I and II contain chlorophyll and carotenoid molecules, which plants need to collect and break down energy.

Together, the thylakoid network carries out the light reactions of photosynthesis, including the breakdown of water to create oxygen that is released for animals to breathe. Through the process, energy is collected that allows a plant to grow and flourish.

Q&A Related to "What is the function of the thylakoid?"
A thylakoid is a membrane compartment that is bound inside the chloroplasts and cyanobacteria. It is the site of the light-dependent reactions for the process of photosynthesis.
The thylakoids are the site of the light-dependent reactions of photosynthesis.
site of photosynthesis (light-dependent reactions) Source(s): http://en.wikipedia.org/wiki/Thylakoid
The mitochondrial matrix is similar in function to a chloroplast's thylakoid space as they both are involved in ATP production via a proton gradient (across the thylakoid membrane
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Photosystem II is the first protein complex in the light-dependent reactions of photosynthesis. This protein complex is located within the thylakoid membrane of ...
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