Water loss was expressed as milliliters of water per square centimeter of leaf surface area. The average cumulative water loss by the plants in Group I is presented in the table below. Explain how biological and physical processes are responsible for the differences between each of your predictions and the data for Group I. c. Explain how the concept of water potential is used to account for the movement of water from the plant stem to the atmosphere during transpiration. After realizing the error, the assistant randomly labeled the flasks containing these four unknown solutions as flask A, flask B, flask C, and flask D. Design an experiment, based on the principles of diffusion and osmosis, that the assistant could use to determine which of the flasks contains each of the four unknown solutions.
Many physiological changes occur during exercise.
Relate the chemical structure of an enzyme to its specificity and catalytic activity. Design a quantitative experiment to investigate the influence of pH or temperature on the activity of an enzyme. Describe what information concerning the structure of an enzyme could be inferred from your experiment.