What is a thylakoid definition?
What is a thylakoid definition?
Definition of thylakoid : any of the membranous disks of lamellae within plant chloroplasts that are composed of protein and lipid and are the sites of the photochemical reactions of photosynthesis.
What is chloroplast and its function?
Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process. By doing so, they sustain life on Earth. Chloroplasts also provide diverse metabolic activities for plant cells, including the synthesis of fatty acids, membrane lipids.
Who first discovered chloroplast?
Discovery. The first definitive description of a chloroplast (Chlorophyllkörnen, “grain of chlorophyll”) was given by Hugo von Mohl in 1837 as discrete bodies within the green plant cell.
What is an example of chloroplast?
An example of a chloroplast is a cell in algae that consumes carbon dioxide and releases oxygen while creating sugar. (cytology) An organelle found in the cells of green plants, and in photosynthetic algae, where photosynthesis takes place.
Where is the thylakoid?
chloroplasts
Thylakoids are present in the chloroplasts of all the plants and blue-green algae. Thylakoids are interconnected disc-like sacs of the internal membrane system of the chloroplast. They are found suspended in the stroma. Thylakoids are arranged in a stack, which is called grana.
What is a chloroplast easy definition?
Definition of chloroplast : a plastid that contains chlorophyll and is the site of photosynthesis — see cell illustration.
What was the origin of all chloroplasts?
chloroplasts likely originated as free-living cyanobacteria.
Is chloroplast an animal cell?
Chloroplasts are found in plant cells, but not in animal cells. The purpose of the chloroplast is to make sugars that feed the cell’s machinery. Photosynthesis is the process of a plant taking energy from the Sun and creating sugars.
What is in a chloroplast?
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.
How does a thylakoid work?
Photosynthetic pigments (e.g., chlorophyll) are embedded into the thylakoid membrane, making it the site of the light-dependent reactions in photosynthesis. The stacked coil shape of the grana gives the chloroplast a high surface area to volume ratio, aiding the efficiency of photosynthesis.
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