What do steroids and amino acid-based hormones have in common?

-They both are secreted by endocrine glands.

Explanation:

Hormones can be defined as signalling molecules, synthesized and secreted by endocrine glands that release their contents directly into blood. One thing is common between steroids and amino acid-based hormones as both amino acid-based hormones and steroid hormones are produced by endocrine glands.

Steroid hormones are lipid-derivatives hormones, such as cortisol, estrogen, and androgen. These hormones can cross the lipid bilayer and receptors for these hormones generally present inside the cells.  

Amino acid-based hormones are derived from amino acids, such as thyroid hormone, melatonin, and epinephrine. Receptors for these hormones generally present at cell surface as these hormones cannot cross lipid bilayer.

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