Examlex
Race is to ethnicity what _____ is to _____.
Cell Membrane
The outer limit of a cell that is thin and selectively permeable. It controls the movement of substances into and out of the cell.
Hormone
A chemical secreted by a cell that affects the functions of other cells.
Steroidal Hormones
Hormones derived from cholesterol, including sex hormones and corticosteroids, which play vital roles in body functions.
Genes
Units of heredity made up of DNA that encode the information necessary to build and maintain an organism's cells and pass traits to offspring.
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