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- What is the concentration of chlorophyll B if an absorbance of 1 is measured at 431nm in a cuvette with a pathlength of 1cm. (Chlorophyll B Extinction coefficient: 57.43 mM-1 cm-1)Briefly explain why the 14C/12C ratio will decrease after the death of plants. A three- to four-sentence explanation is needed.Based on the absorption spectrum below, which of the following plant pigments does the graph represent? A.)Phycocetin (red algae)B.)ChlorophyllC.)Beta caroteneD.)Phycocyanin (cyanobacteria)
- We perform our measurements for KHP at 281 nm. Would we get the same results for pathlength at 250 nm? What about using chlorophyll at 667 nm? Why might a too high concentration of KHP give erroneous data for measuring pathlength?The following essential oils are not phototoxic: Choose one answer. a. fig leaf absolute b. steam distilled citrus c. cold pressed citrus d. angelica rootWhat are nature way chlorophyll concentrate benefits? And what does chlorophyll concentrate does for your body?
- Syngas biomass and Co2 hydrogenation which one is the most sustainable process in methanol production?The absorption spectrum of chlorophyll a differs from the actionspectrum of photosynthesis. Explain this observation.Why is hydrogen sulfide production monitored during fermentation? Why is this end product undesirable in wine production?
- Explain the mechanism behind salt as a food preservative.All of the following essential oils are suitable for chronic pain except: Choose one answer. a. grapefruit b. verbena c. ylang ylang d. lemongrassWhat aeration condition (presence or absence of O2) favors cell growth? What is the metabolic explanation for this influence of oxygen on biomass formation?