U5T3 – Limiting Factors and Photosynthesis Practicals

In the above experiment, what measurements should the student take to measure the rate of photosynthesis?

Other than temperature and pH, give two factors that the student should keep constant in the above experiment.

A buffer was not used in the above experiment, what would happen to the pH during the experiment.

Which wavelength of light would the rate of photosynthesis be lowest in the above experiment?

Which wavelengths would the rate of photosynthesis be highest in the above experiment?

The solution in the above experiment had the same water potential, why is this important?

Why did the student set up tube 1?

Explain the results in tube 3.

In the above experiment, chloroplasts were isolated from plants grown at different light intensities. Why did the scientists measure the rate of oxygen produced?

In the above experiment, chloroplasts were isolated from plants grown at different light intensities. In each trial scientists collected oxygen for 15 minutes. Calculate the difference in oxygen produced from mutant plants at low and high light intensities at a light intensity of 500 μmol photons m^–2s^–1. Measured in μmol O2 mg^–1 hour^–.

In the above experiment, chloroplasts were isolated from plants grown at different light intensities. The mutant plants produced more chlorophyll b . The scientists predicted the mutant plants would grow better in any light intensity; why might this be?

In the above experiment, chloroplasts were isolated from plants grown at different light intensities. What is the saturation point of Normal plants grown in high light?

Name the technique detailed in the above diagram ( spell it correctly!)

In the above experiment, a 'starting line' is drawn in pencil. What is the name of the starting line - The ______(spell it correctly!)

True or False - Using a different solvent does not alter the distance travelled by different substances in this technique?

How do you calculate the Rf value for a substance?

Using the information off the diagram, calculate the Rf value for carotene.

Which graph represents the effect of changing the concentration of carbon dioxide on the rate of photosynthesis?

Which graph represents the effect of changing the temperature on the rate of photosynthesis?

If 'X' on graph A represents 'Light Intensity', what effect would increasing carbon dioxide have on the line (represented in green on the diagram)?