guanine
(noun) a purine base found in DNA and RNA; pairs with cytosine
Source: WordNet® 3.1
guanine (plural guanines)
(chemistry) A substance first obtained from guano; it is a nucleic base and pairs with cytosine in DNA and RNA (by means of three hydrogen bonds).
• nucleobase
• purine
• Guinean, anguine
Source: Wiktionary
26 November 2024
(noun) (music) playing in a different key from the key intended; moving the pitch of a piece of music upwards or downwards
The Boston Tea Party helped popularize coffee in America. The hefty tea tax imposed on the colonies in 1773 resulted in America switching from tea to coffee. In the lead up to the Revolutionary War, it became patriotic to sip java instead of tea. The Civil War made the drink more pervasive. Coffee helped energize tired troops, and drinking it became an expression of freedom.