Name two cell regions containing their own genetic material.a)Chloropl...
- Chloroplast and mitochondria are the only two organelles that contain their own genetic material.
- Besides containing genetic material they also contain 70S type ribosome, own enzymes and some amount of RNA as well.
- They can also undergo fission themselves and thus can multiply themselves.
- This is why these two organelles are called semi-autonomous organelles.
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Name two cell regions containing their own genetic material.a)Chloropl...
Ya it is write .... mitochondria and plastids contain their own genetic material..............dna....
Name two cell regions containing their own genetic material.a)Chloropl...
Mitochondria and Plastids are two cell regions that contain their own genetic material.
1. Mitochondria:
- Mitochondria are double-membrane-bound organelles found in eukaryotic cells.
- They are often referred to as the "powerhouses" of the cell because they generate most of the cell's energy in the form of adenosine triphosphate (ATP) through cellular respiration.
- Mitochondria have their own genetic material in the form of circular DNA molecules, similar to bacteria.
- This DNA encodes for some of the proteins required for mitochondrial function and replication.
- The mitochondrial DNA is separate from the nuclear DNA found in the cell's nucleus.
- The presence of their own genetic material suggests that mitochondria have a unique evolutionary origin, possibly arising from an ancient symbiotic relationship between a primitive eukaryotic cell and a prokaryotic cell.
2. Plastids:
- Plastids are another type of organelle found in plant cells and some protists.
- They are responsible for various functions, including photosynthesis, storage of pigments, and synthesis of lipids.
- Plastids also have their own genetic material in the form of circular DNA molecules, similar to mitochondria.
- The DNA found in plastids is distinct from both nuclear DNA and mitochondrial DNA.
- Plastids have their own machinery for protein synthesis, which allows them to produce some of the proteins required for their function.
- Chloroplasts, a type of plastid, are particularly important for photosynthesis and contain the green pigment chlorophyll.
Therefore, the correct answer is option A, which states that mitochondria and plastids are two cell regions containing their own genetic material. This genetic material in mitochondria and plastids is separate from the nuclear DNA found in the cell's nucleus. The presence of their own genetic material suggests that mitochondria and plastids have a unique evolutionary origin, possibly arising from ancient symbiotic relationships.
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