Examlex
Name and give the function of four minerals needed by the body.
Enzymes
Biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
Hormones
Chemical messengers produced by the endocrine glands in the body, which travel through the bloodstream to target organs to regulate physiology and behavior.
Myelin sheath
A fatty layer that encases the axons of some neurons, which helps increase the speed at which information can travel along the nerve cells.
Electrically charged atoms
Atoms that have gained or lost electrons, resulting in a positive or negative electrical charge, known as ions.
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