DNA structure and function

What does DNA stand for?

• Deoxyribonucleic acid

• Deoxyribose acid

• Deoxynucleic acid

• Deoxyribonucleic base

What is the structure called that consists of two molecules arranged into a ladder-like formation in DNA?

• Single Helix

• Triple Helix

• Double Helix

• Quadruple Helix

What are the tiny subunits that make up a molecule of DNA called?

• Amino acids

• Nucleotides

• Proteins

• Carbohydrates

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

• Phosphate group

• Pentose sugar

• Nitrogenous base

• Amino group

Which of the following is a component of a nucleotide?

• Lipid

• Pentose sugar

• Protein

• Carbohydrate

DNA is made up of millions of subunits called:

• A. Amino acids

• B. Nucleotides

• C. Fatty acids

• D. Monosaccharides

What are the three main components of a nucleotide?

• Phosphate, Pentose Sugar, Nitrogenous Base

• Phosphate, Hexose Sugar, Nitrogenous Base

• Phosphate, Pentose Sugar, Amino Acid

• Phosphate, Hexose Sugar, Amino Acid

Tags

NGSS.HS-LS3-1

What forms the backbone of the DNA molecule?

• Nitrogenous bases

• Phosphate and sugar

• Proteins

• Lipids

What forms the "rungs" of the DNA molecule?

• Phosphate and sugar

• Proteins

• Nitrogenous bases

• Lipids

How many types of nitrogenous bases are there in DNA?

• Two

• Three

• Four

• Five