DNA Structure & DNA Replication Quiz

The sugar-phosphate backbone of DNA is_______________________.

• a.Where the nitrogen bases bond.

• b.Antiparallel

• c.Complimentary

• d.Semi-conservative

Which scientists helped to determine the structure of DNA:

• a.Rosalind Franklin

• b.James Watson and Francis Crick

• c.Erwin Chargaff

• d.All of the above

DNA is made up of repeating individual units called

• a.lipids

• b.proteins

• c.nucleic acids

• d.carbohydrates

If a DNA molecule consists of 20% adenine, how much guanine will be present?

• a.10%

• b.20%

• c.30%

• d.40%

According to the base pairing rules, adenine always pairs with ______________.

• a.Guanine

• b.Thymine

• c.Cytosine

• d..Itself

During DNA replication, the enzyme that adds complementary nucleotides to the new strand is called

• a.RNA primer

• b.DNA polymerase

• c.DNA helicase

• d.Catalase

Purines always bond with _________________.

• a.Pyrimidines

• b.Other purines.

• c.Thymine.

• d.Double-ring nitrogen bases

DNA is found within the ______________ of the cell.

• a.Chloroplast

• b.Ribosomes

• c.Membrane

• d.Nucleus

What does DNA stand for?