Final answer:
In bacteria DNA replication, helicase and primase form a complex called the initiation complex or primosome. Helicase unwinds the DNA double helix, while primase synthesizes a short RNA primer for DNA polymerase III.
Step-by-step explanation:
In bacteria DNA replication, the enzymes helicase and primase play important roles in the initiation of replication. Helicase helps in unwinding the DNA double helix by breaking the hydrogen bonds between the strands, resulting in the formation of a Y-shaped replication fork. Primase synthesizes a short RNA primer that provides a free 3'-OH group for DNA polymerase III to add DNA nucleotides. These enzymes form a complex known as the initiation complex or primosome.