DNA 101

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Questions and Answers

What is DNA composed of?

Two carbohydrate chains
Two polynucleotide chains (correct)
Two lipid chains
Two protein chains

What are the four major types of macromolecules essential for all known forms of life?

Nucleic acids, proteins, lipids, polysaccharides (correct)
Amino acids, proteins, lipids, polysaccharides
Nucleic acids, enzymes, lipids, polysaccharides
Nucleic acids, proteins, lipids, monosaccharides

What is each nucleotide of DNA composed of?

One of four nitrogen-containing nucleobases, a sugar called fructose, and a phosphate group
One of four nitrogen-containing nucleobases, a sugar called ribose, and a phosphate group
One of four nitrogen-containing nucleobases, a sugar called glucose, and a phosphate group
One of four nitrogen-containing nucleobases, a sugar called deoxyribose, and a phosphate group (correct)

How are nucleotides joined together in a DNA chain?

<p>By covalent bonds known as the phosphodiester linkage (C)</p> Signup and view all the answers

What does DNA carry?

<p>Genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses (C)</p> Signup and view all the answers

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