DNA Structure and Replication Review

What is the first step in DNA replication?

• DNA ligase connects the complementary strands

• DNA polymerase adds complementary nucleotides

• DNA helicase unzips the DNA

• DNA polymerase checks for errors

Which enzyme is responsible for repairing mistakes in DNA replication?

• DNA ligase

• DNA helicase

• DNA polymerase

• RNA polymerase

What is the function of DNA polymerase during replication? [choose all those are correct]

• Checking for and correcting errors

• Unzipping the DNA

• Connecting the complementary strands

• Adding complementary nucleotides

DNA polymerase can ---?

• add nucleotides only in 5' --> 3' direction

• add nucleotides only in 3' ----> 5' direction

• proof read and correct errors

• remove RNA primers at the end of replication

What does DNA stand for?

• Deoxyribonucleic Acid

• Ribonucleic Acid

• Deoxyribose Nucleotide

• Ribose Nucleotide

Where is DNA found in eukaryotic cells?

• Nucleus

• Cytosol

• Mitochondria

• Endoplasmic Reticulum

What are the main parts of a nucleotide in DNA?

• Phosphate group, Amino acid, Nitrogen base

• Phosphate group, Fatty acid, Nitrogen base

• Phosphate group, Sugar, Nitrogen base

• Carbohydrate, Sugar, Nitrogen base

Which scientists are credited with discovering the shape of DNA?

• Watson, Crick, Wilkins, Franklin

• Curie, Pasteur, Mendel, Fleming

• Galileo, Copernicus, Kepler, Newton

• Newton, Einstein, Darwin, Tesla

What is the shape of the DNA molecule?

• Cube

• ladder

• double helix

• Cylinder

What is the backbone of the DNA molecule made of?

• Carbohydrates

• Fatty Acids

• Amino Acids

• Sugar and Phosphate Molecules