Examlex
What percentage of DNA sequences do all humans share?
Chernobyl
The site of a catastrophic nuclear accident that occurred in 1986 in the then Soviet Union, resulting in widespread environmental and health impacts.
Sieve Element
A specialized cell in the phloem of vascular plants, responsible for the transport of sugars and other nutrients throughout the plant.
Vessel Element
A type of cell found in the xylem of plants, involved in water transportation; these cells are elongated and connect end to end to form tubes.
Companion Cell
A type of cell in plants that supports the function of the adjacent sieve tube elements in the phloem, facilitating the transport of sugars.
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