Examlex
X-rays are generated by the nucleus during radioactive decay.
Cell Wall
A rigid layer lying outside the plasma membrane of the cells of plants, fungi, and bacteria, providing structure and protection.
Nucleolus
A small, dense structure found within the nucleus of cells, involved in the production of ribosomes and ribosomal RNA.
Actin
A globular structural protein that forms microfilaments, part of a cell's cytoskeleton, and is involved in various types of cell movement and muscle contraction.
Myosin
A protein that, along with actin, plays a key role in muscle contraction by pulling actin filaments.
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