DNA Quiz

What does DNA stand for?

• Deoxyribonucleic Acid

• Deoxyribonuclear Acid

• Dioxynucleic Acid

• Dioxynucleotide Acid

What is the shape of DNA?

• Double helix

• Single strand

• Triple helix

• Quadruple strand

What is DNA made of?

• Nucleotides only

• Amino acids only

• Nucleotides, including a phosphate ion, 2-deoxyribose, and bases adenine, cytosine, guanine, and thymine

• Proteins, including enzymes and hormones

What is the name of the pentose sugar found in the structure of DNA?

• Ribose

• Glucose

• 2-deoxyribose

• Fructose

Which of the following is not a base found in DNA?

• Adenine (A)

• Guanine (G)

• Thymine (T)

• Uracil (U)

What is the chemical structure labeled as 'phosphate ion' composed of?

• Carbon, hydrogen, and oxygen

• Phosphorus and oxygen

• Nitrogen and hydrogen

• Carbon, nitrogen, and oxygen

When numbering the carbons on deoxyribose, where do you start?

• On the carbon to the left of the oxygen on the ring

• On the carbon to the right of the oxygen on the ring

• On the carbon at the top of the ring

• On the carbon at the bottom of the ring

Why is it important to know the numbering system of the carbons on deoxyribose?

• To determine the direction of DNA replication

• To identify the type of sugar in the DNA

• To know where the phosphate group and the bases attach to the sugar molecule

• To understand the shape of the DNA molecule

What is attached to the sugar molecule in place of the -OH group on the 5' carbon to form the DNA backbone?

• Amino group

• Phosphate group

• Methyl group

• Acetyl group

What happens when two molecules join in the DNA backbone?

• A molecule of carbon dioxide is eliminated

• A molecule of water is eliminated

• A molecule of oxygen is eliminated

• A molecule of nitrogen is released