Exploring DNA Replication at the Molecular Level

What technology allows us to see how DNA is copied in living cells?

• Electron microscopy

• X-ray crystallography

• Fluorescence microscopy

• Computer animation

What is the function of the helicase enzyme in DNA replication?

• It copies the DNA strand continuously.

• It spools off the copied DNA to the right.

• It spins the DNA as fast as a jet engine.

• It draws out the DNA in loops.

How does helicase affect the DNA double helix?

• It binds the two strands together.

• It creates new DNA molecules.

• It unwinds the double helix into two strands.

• It copies the DNA strand backwards.

What is the difference between the copying of the two DNA strands?

• Both strands are copied continuously.

• Both strands are copied in loops.

• One strand is copied continuously, the other in sections.

• One strand is copied in sections, the other is not copied.

What is the final result of the DNA replication process?

• Two new DNA molecules

• One new DNA molecule

• Three new DNA molecules

• Four new DNA molecules