Definition of organelle
: a specialized cellular part (such as a mitochondrion, chloroplast, or nucleus) that has a specific function and is considered analogous to an organ
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Recent Examples of organelle from the Web
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Tiny organelles, called mitochondria, exist inside living cells and have their own DNA.
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For plants, researchers often build two phylogenetic trees: one for the DNA stores in the nucleus of the plant's cells and one for the chlorophyll-producing organelles called chloroplasts, which have their own DNA.
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The organelles are where oxidative phosphorylation takes place, and breaking them up may make that metabolic pathway less efficient and promote glycolysis, the researchers suggest.
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Effector T cells, by contrast, turn up glycolysis and are heavy glucose users—a difference reflected in their mitochondria, the organelles that serve as cellular power plants, Pearce and her colleagues reported 2 years ago.
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Hill says that’s likely because the enzyme that converts yellow pigments into red is associated with the mitochondria, the energy producing organelles in cells.
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Mitochondria are organelles that contain their own DNA.
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However, four were absent from 30% to 40% of the organelles, suggesting that those ribosomes were distinctive.
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A technique called ribosome profiling enabled them to pinpoint which mRNAs the organelles were reading—and thus determine their end products.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'organelle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of organelle
New Latin organella, from Latin organum
ORGANELLE Defined for Kids
organelle
Definition of organelle for Students
: a structure (as a lysosome) in a cell that performs a special function
Medical Dictionary
Learn More about organelle
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See words that rhyme with organelle Britannica.com: Encyclopedia article about organelle
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