Biology · Unit 1
Biology Unit 1: Matter and Energy in Ecosystems
6 topics · Start with Properties of Water
Unit 1 follows matter and energy through ecosystems. You will explain the properties of water, trace water, carbon, and nitrogen through their cycles, and follow energy from producers through food webs and energy pyramids.
Study Tips for Unit 1
- Matter cycles but energy flows. Water, carbon, and nitrogen are used again and again, while energy enters as sunlight and leaves as heat.
- When you trace an atom through a cycle, name the process at every step, such as photosynthesis, respiration, fixation, or transpiration.
- For data questions, quote numbers from the graph or table as your evidence, and include units. For energy pyramids, multiply by 0.10 to go up one level and by 10 to go down.
Study Guide
A 6-page review of every topic in this unit, with space to show your work. Try it on your own first, then check your answers with the key.