DNA Nucleotide Structure

What are the three main components of a DNA nucleotide?

• Phosphate group, sugar, nitrogenous base

• Lipid, sugar, nitrogenous base

• Protein, sugar, nitrogenous base

• Carbohydrate, sugar, nitrogenous base

What are the components of a nucleotide in DNA?

• Sugar, Phosphate, Base

• Sugar, Lipid, Base

• Phosphate, Lipid, Base

• Sugar, Protein, Base

What type of bond holds the two strands of DNA together?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

What are the four nucleotide bases shown in the DNA structure diagram?

• A) Adenine, Thymine, Guanine, Cytosine

• B) Adenine, Thymine, Uracil, Cytosine

• C) Adenine, Guanine, Uracil, Cytosine

• D) Thymine, Guanine, Uracil, Cytosine

What is the shape of a DNA molecule?

• Double helix

• Single strand

• Triple helix

• Circular

Which of the following is NOT a component of DNA?

• A) Adenine

• B) Thymine

• C) Glucose

• D) Guanine

What is the role of Adenine in DNA?

• It forms the backbone

• It pairs with Thymine

• It is a type of sugar

• It is a type of lipid.

The two strands of DNA are

• Parallel

• Antiparallel

• Perpendicular

• At Right Angles

The backbone (sides) of the DNA molecule are made up of

• Deoxyribose Sugar and Phosphate

• DNA

• Nitrogenous Bases

• Phosphate and nitrogenous Base

What are the sides of the DNA ladder made of?

• Sugar and phosphate molecules

• Adenine and guanine

• Thymine and cytosine

• Purines and pyrimidines