Part I:
Review the picture attached which shows actual pictures of red blood cells exposed to a variety of osmotic solutions.
Red Blood Cells
Solution A Solution B Solution C
Answer the following questions:
1. Using the terms isotonic, hypertonic or hypotonic, identify what type of solution into which each group of red cells has been placed.
2 . For each of the solutions, identify a percent salt solution that would have caused the results that you saw picture. Hint: Most cellular fluids are composed mainly of water and salts. You will need to know the normal percent salt solution in red blood cells in order to determine the answer to this question.
3. What visual difference(s) did you observe in the changes between the three cells in each of the solutions. Pick one of those differences and research their impact on a specific example in biological systems and provide a report on the impact. When you consider “impact”, consider both positive and negative impact.
Part II:
The data in the table attached shows the results of an experiment investigating plant growth when exposed to different colors of the light spectrum.
1. What conclusions can be drawn from this data? Explain in detail and provide source citations.
2. Was a control used in this experiment? If so, what was it? If not, what would be an appropriate control for this experiment? Explain your answer.
3. Do the graphs reproduced below support the data in the table? Explain why or why not.
