Jobs in Biotech Research & Development 1. Greenhouse assistant: An entry-level greenhouse assistant performs a variety of research tasks and experiments. The position requires a minimum of zero to two years' experience, or an interest in working with plants. 2. Laboratory maintenance worker: A laboratory maintenance worker is responsible for washing and drying glassware and distributing it to appropriate locations within the laboratories. The position requires a high school diploma or equivalent experience. What format element makes the heading “jobs in biotech research & development” stand out? What format element indicates that the job descriptions are in a sequence? What formatting element makes the job of a greenhouse assistant look appealing?