DNA Structure and Function Concepts

What is the characteristic shape of a DNA molecule?

• Single helix

• Double helix

• Triple helix

• Linear chain

What are the individual repeating units that make up a DNA polymer?

• Amino acids

• Monosaccharides

• Nucleotides

• Fatty acids

Which three components make up a single nucleotide?

• Sugar, protein, and base

• Phosphate, sugar, and base

• Amino acid, phosphate, and sugar

• Base, lipid, and sugar

How many different types of bases are found in DNA?

• Two

• Three

• Four

• Five

What are the four bases of DNA?

What forms the protective outer casing of a DNA strand?

• The bases

• The amino acids

• The sugar-phosphate backbone

• The proteins

Which base always pairs with Adenine (A) in a DNA molecule?

• Guanine (G)

• Cytosine (C)

• Thymine (T)

• Uracil (U)

If a DNA strand has the sequence 'G', what would be the complementary base on the opposite strand?

• Adenine (A)

• Thymine (T)

• Cytosine (C)

• Guanine (G)

What term describes how nitrogenous bases in DNA pair specifically with each other (A with T, and G with C)?

• Genetic mutation

• DNA sequencing

• Complementary base pair

• Hydrogen bonding

What does the term 'genetic code' refer to in the context of DNA?

• The double helix structure

• The sequence of bases

• The sugar-phosphate backbone

• The type of sugar in the nucleotide