What would be the independent variables for the spinach leaf serial dilution experiment

On the graph that relates absorbance to flavin concentration, draw a horizontal line that starts at the point on the y-axis that corresponds to the absorbance of your unknown sample and ends at the curve you drew through your data points . Next draw a vertical line that starts at the point where the horizontal line intersected the curve and ends at the x-axis. The point where this vertical line intersects the x-axis corresponds to the concentration of flavin in your unknown sample. What was the letter on the tube with your unknown sample? What is the concentration of the flavin in your unknown

Why was water added to plant 6 instead of mannitol in the controlexperiment? What do the results of the control experiment indicate?

You are culturing 2 algal species. Species A has a maximum photosynthetic output of  8 mg C mg-1 chl a h-1 and a half saturation constant of 20 µE m-2 s-1.  Species B reaches a maximum photosynthetic output of 4 mg C mg-1 chl a h-1 and has half saturation constant of 18 µE m-2 s-1. Which species will be growing faster at a PAR light intensity of 80 µE m-2 s-1? Why?

cite your reference

Thirty corn seedlings of equal size were randomly assigned to one of three treatment groups. At the beginning of the experiment, the plants in group I were dried and the mass was determined. The plants in group Il were maintained in light for a week. The plants in group III were maintained in the dark for a week. All conditions, other than light, were the same for groups IlI and III. At the end of the week, the plants in groups Il and III were dried and the mass was determined. The experimental results are provided in the table. Initial Dry Mass of 10 Plants (g) Dry Mass of 10 Plants After One Week (g) Change in Dry Mass of 10 Plants Over One Week (g) Treatment Group Treatment Nohe 14.8 II Light 32.8 +18 III Dark 11.7 -3.1 (a) To explain the increase in mass of the light-grown plants, identify ONE inorganic source of new plant mass and connect it to the cellular process underlying the increase in mass. (b) To explain the decrease in mass of the dark-grown plants, identify the overall…