Biology · Unit 6
Biology Unit 6: Cells and Homeostasis
10 topics · Start with Cell Theory
Unit 6 looks at living things from the inside out. You will use cell theory to compare prokaryotic and eukaryotic cells, explain what organelles do, and see how the cell membrane controls what enters and leaves. Then you will zoom out to organ systems and feedback loops that keep an organism in balance.
Study Tips for Unit 6
- Link structure to function. For any cell part, organ, or cell type, ask what it looks like and what job that shape allows.
- For transport, first decide whether the substance moves down or against its concentration gradient. Down the gradient is passive; against it needs energy from ATP.
- For data questions, quote numbers from the table or graph as your evidence, include units, and finish with a reason that links the data to a biology idea. When you calculate a surface area to volume ratio, divide the surface area by the volume.
Unit 6 Study Guide
A printable review of all 10 topics, with an answer key, is coming soon. Until then, use the practice worksheet at the end of each lesson.