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guanine

Upper-Intermediate (B2)

IPA: /ˈɡwɑːniːn/

KK: /ˈɡwɑːniːn/

noun
Definition

A type of chemical compound that is a building block of DNA and RNA, important for storing and transmitting genetic information.


Example

Guanine pairs with cytosine in the structure of DNA.


Conversation
Sloth A
I was reading about DNA, and I learned that guanine is one of the bases.
Sloth B
That's interesting! I didn't know that it played such a big role in genetics.
Sloth A
Yeah, and it pairs with cytosine in the DNA structure.
Sloth B
Exactly! It's fascinating how these molecules work together.

Synonyms & Antonyms
Synonyms
nucleotide
base
purine
Antonyms
Root Explanation

Guanine is derived from the Spanish word 'guanina', which comes from 'guano' (meaning fertilizer, specifically bird droppings) and the suffix '-ine' (used in chemistry to denote substances). The word guanine refers to a compound found in guano and is one of the four main nucleobases in the nucleic acids DNA and RNA.

Memory Tip

Think of 'guano', which is a fertilizer made from bird droppings, to remember that guanine is a substance derived from it and is essential in the structure of DNA and RNA.

Visually Confused Words
guaranine
uranine
gunne
gaine
epiguanine
lupanine
iguanian
guvacine
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