Nucleotide Structure and Function Quiz

What are the three main components of a nucleotide?

• Phosphate group, ribose sugar, and lipid

• Amino acid, phosphate group, and ribose sugar

• Nitrogenous base, amino acid, and glucose

• Nitrogenous base, phosphate group, and five-carbon sugar

Which type of sugar is found in DNA?

• Ribose

• Fructose

• Deoxyribose

• Glucose

How are the sugars and phosphate groups of nucleotides linked?

• Hydrogen bonds

• Ionic bonds

• Phosphodiester bonds

• Covalent bonds

Which base pairs with adenine in DNA?

• Cytosine

• Thymine

• Uracil

• Guanine

Which of the following is a purine base found in DNA?

• Cytosine

• Uracil

• Thymine

• Adenine

What percentage of human DNA nucleotides contain guanine?

• 72%

• 22%

• 28%

• 50%

What is the role of ATP in the cell?

• Regulates metabolism

• Serves as the primary energy molecule

• Stores genetic information

• Acts as a coenzyme

Which nucleotide is essential for transporting chemical signals?

• ATP

• cAMP

• NAD+

• NADPH

What is the difference between a nucleotide and a nucleoside?

• Both contain a phosphate group

• Neither contains a phosphate group

• A nucleoside contains a phosphate group, while a nucleotide does not

• A nucleotide contains a phosphate group, while a nucleoside does not

Which nucleotide is involved in redox reactions as a coenzyme?

• ATP

• GTP

• cAMP

• NAD+