Dictionary Meaning and Definition on 'Organelle'
n : a specialized part of a cell; analogous to an organ; "the
first organelle to be identified was the nucleus" [syn: cell
Wikipedia Meaning and Definition on 'Organelle'
In cell biology, an organelle (pronounced /ɔrɡəˈnɛl/) is a specialized subunit within a cell that has a specific function, and is usually separately enclosed within its own lipid bilayer.
The name organelle comes from the idea that these structures are to cells what an organ is to the body (hence the name organelle, the suffix -elle being a diminutive). Organelles are identified by microscopy, and can also be purified by cell fractionation. There are many types of organelles, particularly in eukaryotic cells. Prokaryotes were once thought not to have organelles, but some examples have now been identified.
In biology, organs are defined as confined functional units within an organism. The analogy of bodily organs to microscopic cellular substructures is obvious, as from even early works, authors of respective textbooks rarely elaborate on the distinction between the two.[See more about Organelle at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Organelle'
Organelle Sample Sentences in News
- Chemical probe profiles live-cell organelle activity, adds to understanding of lysosome dynamics
A team of scientists from Pacific Northwest National Laboratory synthesized a chemical activity-based probe (ABP) that can provide new information about how living cells function. The new ABP is designed to enter a living cell without interacting with anything until it enters a specific organelle: the lysosome. This proof-of-concept ABP then labels only functional Read more on this news related to 'Organelle'