Examlex
Although elliptical and irregular galaxies have been observed in both dwarf and giant varieties, we find only giant spiral galaxies.
Cytoplasm
The gel-like substance within a cell, excluding the nucleus, that contains organelles and is the site of various vital metabolic processes.
Cell Membrane
The semipermeable membrane surrounding the cytoplasm of a cell, managing the entry and exit of substances.
Filtration
A process that separates particles from a fluid (liquid or gas) by passing the fluid through a filter medium that only allows the fluid to pass through.
Metabolism
The set of life-sustaining chemical reactions in organisms for converting food to energy, repairing cells, and discarding waste.
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