Examlex
In the upper atmosphere,photochemical reactions involving organic molecules containing the elements ________ and ________ generate products that lead to ozone depletion.
Animal Cells
Eukaryotic cells that lack cell walls, chloroplasts, and have a more complex structure including a nucleus and other membrane-bound organelles.
Plant Cells
The basic structural and functional units of plants, distinguished by their ability to perform photosynthesis through organelles called chloroplasts and having cell walls made of cellulose.
Meiosis
A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes.
Synapsis
Pairing of homologous chromosomes during meiosis I.
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