Examlex
The atmosphere is composed of 78% nitrogen and 21% oxygen molecules.
Transport
The act of moving people or goods from one location to another via vehicles, containers, or by other means.
Cell Membrane
The semipermeable membrane surrounding the cytoplasm of a cell, controlling the movement of substances in and out.
Cytoplasm
The jelly-like material within a cell, excluding the nucleus, where various cellular processes occur, including enzyme reactions and nutrient processing.
Nucleus
The central and most important part of an object, movement, or group, forming the basis for its activity and growth; in cells, it is the membrane-bound structure that contains the chromosomes and controls the cell's activities.
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