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Questions and Answers

What is DNA made up of?

Amino acids and phosphate

Amino acids

Nucleotides (correct)

Deoxyribose

How is Ribose linked to phosphate in RNA?

Amide bond

Phosphodiester bond (correct)

Glycosidic bond

Hydrogen bond

How many base pairs are there in a full turn of a DNA molecule?

18 (correct)

What is the backbone of DNA made of?

Deoxyribose and phosphate Signup and view all the answers

Which nitrogen bases are found in DNA?

Adenine, guanine, cytosine, thymine Signup and view all the answers

Which of the following oligonucleotides could form a hairpin structure?

GGCTAATACGGGGGCGTATTAGCC Signup and view all the answers

If a piece of 100 bp DNA has 32 cytosine, how many thymine is present in that DNA?

60 Signup and view all the answers

Which of the following DNAs has mirror repeats?

5’-CCTGGTAACCGTTGCCAATGGTCC-3’ 3’-GGACCATTGGCAACGGTTACCAGG-5’ Signup and view all the answers

Which of the following DNAs has a palindromic sequence?

5’-GCCTTGTAGCGGATTAGCTTGG-3’ 3’-CGGAACATCGCCTAATCGAACC-5’ Signup and view all the answers

Study Notes

DNA Structure

DNA is composed of nitrogen bases, sugar molecules, and phosphate groups.

RNA Structure

In RNA, ribose is linked to phosphate through a phosphodiester bond.

DNA Helix

One full turn of a DNA molecule consists of 10 base pairs.

DNA Backbone

The backbone of DNA is composed of sugar molecules and phosphate groups.

Nitrogen Bases in DNA

DNA contains the nitrogen bases adenine (A), guanine (G), cytosine (C), and thymine (T).

Hairpin Structure

An oligonucleotide with inverted repeats can form a hairpin structure.

DNA Composition

If a 100 bp DNA has 32 cytosine, it will have 32 guanine (since C-G pairing) and 36 thymine (since A-T pairing).

Mirror Repeats and Palindromic Sequences

DNA with inverted repeats has mirror repeats.
DNA with a sequence that reads the same forward and backward has a palindromic sequence.

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Description

Test your knowledge on nucleotides and DNA with this practice quiz. Identify the components of a nucleotide, understand the structure of DNA, and learn about the link between ribose and phosphate in RNA. Perfect for biology enthusiasts and students studying genetics.