Cells, energy, and ecosystems — study worksheet

1. Read the core idea

Cells carry out life processes. The nucleus contains genetic information in eukaryotic cells, the cell membrane controls exchange, and mitochondria help release usable energy from food. Plants also have chloroplasts that capture light for photosynthesis. Follow energy from producers to consumers; decomposers recycle matter. Energy flows through a food web, while matter cycles.

2. Trace the worked example

A plant stores light energy in sugar; an animal obtains chemical energy by eating. Both plants and animals use cellular respiration.

Write the steps or relationships that explain the result:

3. Use the method

Compare photosynthesis with cellular respiration, then connect one organism to its role in a food web.

Summarize the method in your own words, with a diagram or labeled units where useful:

4. Record a mistake to avoid

Do not assume only animals respire or that decomposers create energy.

Describe how you will recognize and correct this mistake:

5. Review after practice

Use the mixed practice check linked in the hub. Record the skill you need to revisit and your next study step.