Final answer:
The streak plate method is used to separate a mixed culture into individual colonies, and it can be used with samples suspected of low cell density.
Step-by-step explanation:
The streak plate method is used to separate a mixed culture into individual colonies, and it can be used with samples suspected of low cell density. The goal of the streak plate method is to dilute the cells by spreading them out over the surface of the agar. By streaking the sample in a specific pattern, the cells are spread out and can form individual colonies.