DNA structure base pairs flashcards

What is DNA?

DNA, or deoxyribonucleic acid, carries genetic information in living organisms.

Base pairs in DNA

The bases are adenine (A), thymine (T), cytosine (C), and guanine (G).

True or false: A pairs with C.

False, because A pairs with T and C pairs with G.

Difference between DNA and RNA

DNA is double-stranded and contains thymine; RNA is single-stranded and contains uracil.

Fill in the blank: A pairs with ____.

A pairs with thymine (T) in DNA.

Function of DNA

DNA stores genetic information and provides instructions for protein synthesis.

What are nucleotides?

Nucleotides are the building blocks of DNA, consisting of a sugar, a phosphate group, and a base.

True or false: The DNA structure is a triple helix.

False, because DNA is a double helix.

Which base pairs with guanine?

Cytosine (C) pairs with guanine (G).

Components of a nucleotide

- Sugar - Phosphate group - Nitrogenous base

What is the role of hydrogen bonds in DNA?

Hydrogen bonds hold the base pairs together, stabilizing the DNA structure.

Difference between purines and pyrimidines

Purines (A, G) are double-ringed; pyrimidines (C, T) are single-ringed.