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Genetics

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Genetics

reticulopodia

Biology; Genetics

Long thread-like pseudopodia that branch apart and rejoin, forming a fine network.

theca

Biology; Genetics

General term for any stiff outer covering of a unicellular protist, and usually made up of interlocking plates. dinoflagellates and diatoms are examples of protists with thecae.

trichocyst

Biology; Genetics

Organelle in ciliates and dinoflagellates which releases long filamentous proteins when the cell is disturbed. Used as a defense against would-be predators.

ultrastructure

Biology; Genetics

The detailed structure of a specimen, such as a cell, tissue, or organ, that can be observed only by electron microscopy. Also called fine structure.

undulipodium

Biology; Genetics

Another term for a eukaryotic flagellum.

vacuole

Biology; Genetics

Membrane-bound fluid-filled space within a cell. In most plant cells, there is a single large vacuole filling most of the cell's volume. Some bacterial cells contain gas vacuoles.

amoeboid

Biology; Genetics

Having no definite shape to the cell, able to change shape.

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