Researchers investigate an eye drop that affects the way the eye focuses.
A volunteer looks at a card held 20 cm from their eyes. After each concentration of the eye drop is used, the researchers record:
| Concentration of eye drop in % | Closest distance at which print is clear in cm | Thickness of lens in mm |
|---|---|---|
| 0.00 | 12 | 4.3 |
| 0.02 | 18 | 4.1 |
| 0.04 | 35 | 3.8 |
| 0.08 | 75 | 3.6 |
Describe the effect of increasing the concentration of the eye drop. Use data from the table.
Describe how the eye drop may have affected the ciliary muscles and suspensory ligaments at a concentration of 0.08%, and how this would affect the focusing of light from the card.
4 exam-style questions on AQA GCSE Biology 5.2.3 The eye. Each one has a worked solution and a mark scheme showing where the marks go.