DNA Structure Quiz

What type of bond holds the sugar-phosphate backbone of the DNA together?

• Hydrogen bonds

• Ionic bonds

• Covalent bonds

• Van der Waals forces

What is the directionality of the two strands of DNA?

• Both strands run in the same direction.

• The strands run in random directions.

• The strands run in opposite directions to each other.

• The directionality of the strands is not specific.

What type of bonds form between the base pairs in the DNA molecule?

• Covalent bonds

• Hydrogen bonds

• Ionic bonds

• Van der Waals forces

What is the structure that DNA forms?

• Single helix

• Double helix

• Triple helix

• Quadruple helix

What is DNA responsible for in the process of protein synthesis?

• It provides the energy required for the synthesis.

• It gives the order for a sequence of amino acids.

• It directly forms the protein structure.

• It transports amino acids to the ribosome.

How do amino acids combine to form a polypeptide chain?

• By ionic bonding.

• By hydrogen bonding.

• By condensation reactions.

• By covalent bonding between amino groups.

What does the genome refer to?

• The single gene that controls cell division.

• The complete set of proteins in a cell.

• The complete set of genes in a cell.

• The specific DNA sequence for a particular protein.

Approximately how many genes does human DNA contain?

• 1000 genes.

• 10,000 genes.

• 25,000 genes.

• 100,000 genes.

What is the proteome?

• The structure of a protein.

• The enzyme that helps in protein synthesis.

• The full range of proteins produced by the genome.

• The membrane that encloses protein molecules.

How many proteins can be produced by the proteome?

• Up to one hundred proteins.

• Up to one thousand proteins.

• Up to one hundred thousand proteins.

• Up to one million proteins.