Active and Passive Cell transport. There are three main types of passive transport - Diffusion, Osmosis and Facilitated Diffusion. There are two types of active transport - Primary (direct) and Secondary (indirect).
The resources above cover the following skills:
Reading Standards for Literacy in Science and Technical Subjects
Craft and Structure
Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics.