easy · Enhanced ACT science
A biologist measured the rate of photosynthesis (bubbles of oxygen per minute) from a water plant at increasing light intensities, with carbon dioxide and temperature held constant:
| Light intensity (units) | Bubbles/min |
| :--- | :--- |
| 1 | 8 |
| 2 | 16 |
| 3 | 24 |
| 4 | 30 |
| 5 | 31 |
| 6 | 31 |
Which statement best describes the relationship shown by the data?
- The rate increases steadily across every intensity level without ever leveling off
- The rate increases at first, then levels off at higher light intensities
- The rate steadily decreases each time light intensity increases
- The rate stays essentially constant across all light intensities tested
Sign up free to see the explanation and track your rank →
More Enhanced ACT science practice
- An experimenter tests the effect of different light waveleng… — In this experimental desig
- At any given temperature, the catalyst increases the reaction rate by what factor?
- What is the relationship?
- Which species has a higher population at Year 5?
- Which soil type retains the LEAST amount of water?
- What is the pressure when the volume is 2.0 L?
- If water has a density of 1.00 g/cm³, which liquid will sink in water?
- As the frequency of the waves increases, the wavelength: