DNA Structure and Function

What is the primary function of DNA?

• To transport oxygen in the blood

• To store instructions for making proteins

• To digest food

• To provide energy for cells

Tags

NGSS.HS-LS1-1

What are the building blocks of DNA called?

• Monosaccharides

• Fatty acids

• Nucleotides

• Amino acids

Which of the following is NOT a component of a nucleotide?

• A lipid

• A sugar

• A phosphate group

• A nucleobase

Which nucleotide pairs with Adenine (A) in DNA?

• Thymine (T)

• Uracil (U)

• Guanine (G)

• Cytosine (C)

What type of bond connects the nucleotides in a DNA strand?

• Hydrogen bonds

• Ionic bonds

• Phosphodiester bonds

• Peptide bonds

What is the shape of the DNA molecule?

• Single helix

• Double helix

• Triple helix

• Quadruple helix

What is the sugar found in DNA nucleotides?

• Ribose

• Deoxyribose

• Glucose

• Fructose

What is the term for the selective binding of A with T and C with G?

• Non-specific binding

• Complementary base pairing

• Random pairing

• Parallel alignment

What is a gene?

• A type of protein

• A lipid molecule

• A segment of DNA that codes for a protein

• A single nucleotide

What is a codon?

• A single nucleotide

• A five-nucleotide sequence

• A pair of nucleotides

• A three-nucleotide sequence