“the first organelle to be identified was the nucleus”
- Synonyms:
- cell organ, cell organelle
- Types:
- show 10 types...
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cilium
a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms
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lysosome
an organelle found in the cytoplasm of most cells (especially in leukocytes and liver and kidney cells)
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cell nucleus, karyon, nucleus
a part of the cell containing DNA and RNA and responsible for growth and reproduction
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nucleole, nucleolus
a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis
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chondriosome, mitochondrion
an organelle containing enzymes responsible for producing energy
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centriole
one of a pair of small cylindrical cell organelles near the nucleus in animal cells; composed of nine triplet microtubules and form the asters during mitosis
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ribosome
an organelle in the cytoplasm of a living cell; they attach to mRNA and move down it one codon at a time and then stop until tRNA brings the required amino acid; when it reaches a stop codon it falls apart and releases the completed protein molecule for use by the cell
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pronucleus
the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote
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sarcosome
a large mitochondrion in a striated muscle fiber
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subthalamic nucleus
an oval mass of grey matter located in the caudal part of the subthalamus; associated with the striate body
- Type of:
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organ
a fully differentiated structural and functional unit in an animal that is specialized for some particular function
