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DNA Structure Overview

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Questions and Answers

Which of the following components is part of a nucleotide?

Hydroxyl group

Amino group

Carboxyl group

Phosphate group (correct)

DNA has six different bases that bond in specific pairs.

False

What shape is a DNA molecule twisted into?

double helix

In DNA, adenine pairs with _ and cytosine pairs with _.

<p>thymine, guanine</p> Signup and view all the answers

Match the components of a nucleotide with their descriptions.

<p>Phosphate group = Forms the backbone of the DNA structure Deoxyribose sugar = Provides stability to the nucleotide Nitrogen-containing base = Varies among nucleotides and carries genetic information</p> Signup and view all the answers

Study Notes

DNA Structure

DNA is a double-stranded molecule.
Each strand is composed of nucleotides.
Each nucleotide has a phosphate group, a deoxyribose sugar, and a nitrogenous base.
Four different bases exist: adenine (A), thymine (T), cytosine (C), and guanine (G).
The bases pair specifically: A with T, and C with G.
The pairing of bases is held together by hydrogen bonds.
The two strands twist into a double helix shape.
The strands run antiparallel to each other.

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Description

Explore the fundamental aspects of DNA structure in this quiz. Learn about the double-stranded nature of DNA, the composition of nucleotides, and the specific base pairing that forms the double helix. Test your knowledge on the essential elements that make up one of the most crucial molecules in biology.