Steps of DNA Replication Explained

What is the primary function of DNA helicase during DNA replication?

• To unwind the double helix

• To join Okazaki fragments

• To stabilize single-stranded DNA

• To synthesize new DNA strands

Why are single-stranded binding proteins (SSBs) important in DNA replication?

• They unwind the double helix

• They join Okazaki fragments

• They synthesize RNA primers

• They prevent the separated DNA strands from re-annealing

What is the role of RNA primers in DNA replication?

• To join Okazaki fragments

• To provide a starting point for DNA polymerase

• To stabilize single-stranded DNA

• To unwind the DNA double helix

In which direction does DNA polymerase read the template strand?

• 5' to 3'

• 3' to 5'

• 5' to 5'

• 3' to 3'

What is the main difference between the leading and lagging strands during DNA replication?

• The leading strand is synthesized in fragments, while the lagging strand is synthesized continuously

• Both strands are synthesized in fragments

• The leading strand is synthesized continuously, while the lagging strand is synthesized in fragments

• Both strands are synthesized continuously

What are Okazaki fragments?

• Segments of DNA synthesized on the lagging strand

• Enzymes involved in DNA replication

• Short RNA primers

• Segments of DNA synthesized on the leading strand

What is the function of RNAse H (or DNA polymerase I) in DNA replication?

• To synthesize new DNA strands

• To remove RNA primers

• To unwind the double helix

• To stabilize single-stranded DNA

What is the role of DNA ligase in DNA replication?

• To stabilize single-stranded DNA

• To join Okazaki fragments

• To unwind the double helix

• To synthesize RNA primers

Why is DNA replication described as semi-conservative?

• Each new DNA molecule contains two old strands

• Each new DNA molecule contains two new strands

• Each new DNA molecule contains one old and one new strand

• Each new DNA molecule contains fragments of old and new strands

What does the term 'semi-discontinuous' mean in the context of DNA replication?

• Both strands are synthesized discontinuously

• One strand is synthesized continuously, and the other discontinuously

• Both strands are synthesized continuously

• Neither strand is synthesized