Will all of the light wavelengths be absorbed or reflected equally? What is the purpose of the chlorophyll solvent blank? 2. What is the spectrophotometer actually measuring? What does it tell you about light absorption and the pigments in chlorophyll

1-. How would the extraction efficiency change if you changed the solvent from hexane to a more polar solvent like 1-chlorohexidine?  2-The cell wall of the microalgae is polar, can we use our method to extract lipids from microalgae?

5. n° of 2-chloro-2-methylpropane is 1.3850. If a 1g sample of 2-chloro-2-methylpropane was contaminated with 1 drop of ethanol, what do you think the effect would be on the refractive index and by approximately how much? (1 drop of ethanol weighs about 0.03 g).

what effect would using an old Gram's crystal violet preparartion containing crystallized dye have on your judgment of the gram reaction of an organism?

Light Intensity 20 Temperature 25 Light Color = White Explain what happened to the dissolved oxygen over the course of 60 minutes.  Why did this happen?  In other words, what process caused the change that you see in DO?

1. What chemical is causing the initial absorbance in the spectrophotometer (enzyme assay for determination of glucose and fructose concentrations), before any enzymes are added? Pick the best choice.    NADP+,  Beverage sample, ADP, NADPH, Imidazole buffer, Fructose, G6P dehydrogenase, Water, Hexokinase, Glucose, ATP, Phosphoglucoisomerase 2. After the enzymes have been added and the reaction has occurred, what chemical is being measured in the spectrophotometer (enzyme assay for determination of glucose and fructose concentrations)? Pick the best choice.   NADP+,  Beverage sample, ADP, NADPH, Imidazole buffer, Fructose, G6P dehydrogenase, Water, Hexokinase, Glucose, ATP, Phosphoglucoisomerase

4. TLC is still useful in the lab but is being replaced by automated chromatographic methods. For example, TLC, FPLC, and HPLC are now automated processes, and computers can control various parameters, such as flow rate, blends of solvent mixtures, etc. Can you think of how the ability to manipulate the parameters of these automated chromatographic methods (sample size, column plate length, flow rate, solvent gradients, etc.) might accentuate or improve an investigator's ability to separate amino acids or other biomolecules?

4. A 1.0 M solution of copper(II) sulfate is electrolyzed using platinum electrodes. If 1.50 g of copper metal is deposited on the cathode, how many moles of oxygen gas were produced at the anode during the same time period?