Examlex
Which biome is pictured here?
Nucleus
A membrane-bound organelle found in eukaryotic cells, containing most of the cell's genetic material.
Chromosome
The structure that transmits the genetic material from one generation to the next; composed of condensed chromatin; each species has a particular number of chromosomes that is passed on to the next generation.
Gene
A unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
Enzyme
Biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
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