Final answer:
E-commerce systems are multi-tiered, not composed of just one tier. They include layers like the presentation, application, and data tiers.
Step-by-step explanation:
The statement 'An e-commerce system is composed of one layer, or tier, that depends on what components are used' is false. E-commerce systems are typically multi-tiered, consisting of several layers such as the presentation tier (user interface), the application tier (business logic), and the data tier (database). These tiers work together to handle various aspects of an e-commerce platform, from user interaction to data processing and storage.