DNA Structure and Function Quiz

What is the primary function of DNA in a cell?

• To transport nutrients across the cell membrane

• To store genetic information and instructions

• To catalyze biochemical reactions

• To provide energy for cellular processes

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

• A lipid molecule

• A phosphate group

• A five-carbon sugar

• A nitrogenous base

Which nitrogenous base pairs with adenine in DNA?

• Guanine

• Uracil

• Cytosine

• Thymine

How many hydrogen bonds are formed between cytosine and guanine?

• One

• Three

• Two

• Four

What is the shape of the DNA molecule?

• Quadruple helix

• Single helix

• Double helix

• Triple helix