I have recently purchased a bottle of essential oil to be used as mosquito repellent. Classify the essential oil into the relevant group of secondary metabolites. Describe the distinctive scent produced and name the plant in which this essential oil could be (i) extracted.
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- Citronella oil is one of the commonly used essential oil. Classify the citronella oil into correct chemical group of secondary metabolites and describe the distinctive scent produced. (i) (ii) What are the roles of terpenes in plant defense?Identify secondary metabolites produced by a plant in the following scenarios and explain how it works as plant defense mechanism. () Pungent smell produced during the processing of raw Chinese Kailan. (ii) Improperly cook or prepared cassava chips.A substance obtained from Willow bark in 1973 was found to reduce fever resulting from malaria, and about a century later to relieve the pain of rheunmatism. What is the ingredient in Willow bark extract? Discuss the proposed mechanism of its action.
- Two groups of tomatoes were grown under laboratoryconditions, one with humus added to the soil and one acontrol without humus. The leaves of the plants grownwithout humus were yellowish (less green) compared withthose of the plants grown in humus-enriched soil. The bestexplanation is that(A) the healthy plants used the food in the decomposing leavesof the humus for energy to make chlorophyll.(B) the humus made the soil more loosely packed, so waterpenetrated more easily to the roots.(C) the humus contained minerals such as magnesium andiron needed for the synthesis of chlorophyll.(D) the heat released by the decomposing leaves of the humuscaused more rapid growth and chlorophyll synthesis.essential oils have been studied as potential antimicrobial agents. These naturally occuring compounds are linked to having the following type of activity in clinical trials: virucidal, septicidal, bactricidal, fungicidalMargarines made from plants oils are healthier ,since they are hydrogenated. A) TRUE B)FALSE
- With the aid of diagrams, illustrate the biochemical basis of the following: Allopurinol used in the management of gout Hydroxyurea as an antineoplastic agent 6-mercaptopurine, an anticancer agent Trimethoprim, an antibacterial agentHow would the following plants defend themselves from being eaten? Identify the secondary metabolite involved and how it works. (i) Cabbage. (ii) Cassava.The following four chemicals commonly found in defined growth media contain all of the necessary atomic macronutrients, namely C, O, N, H, S and P, which microbes require: glucose (C6H12O6), K2HPO4, MgSO4.7H2O, and (NH4)HPO4. Part a. Create a simple diagram to map which growth media chemical contributes atoms to which of the four biological macromolecules (amino acids, polysaccharides, lipids, and ribonucleic acids). Part b. Consider a cell culture broth that originally (before inoculation with cells) contains 5.0 gr/L glucose (C6H12O6), 1.2 gr/L K2HPO4, 0.3 gr/L MgSO4∙7H2O, and 1.0 gr/L (NH4)HPO4. Create a table showing how much of each of the different atoms (C, H, O, K, P, Mg, S, N) are available for incorporation into cell macromolecules (assume 50% of the glucose is catabolized, while the remainder goes for energy (respiration). Express your answers with units of grams of atomic species / liter of culture broth.
- i)What are phytoalexins? ii)Explain how it is synthesized? iii)Briefly, explain a few distinctly different approaches to mass producing phytoalexins for medicinal use.Hello, Could Bartleby's expert explain the toxic effects of mycotoxins on living organisms? Thank you!1(a)What is a psychrotroph? (b)From what natural sources would you isolate a thermophile? A psychrophile? (C)How does temperature affect the growth of a microorganism? (D)State the temperature class for Escherichia coli, Bacillus sp, Aeromonas sp, Micrococcus luteus, and suggest their optimum growth temperature. 2 (a)Why is dilution important when determining microbe number? (B)How does a decrease in dye colour intensity affect the microbe ? (C)State the possible sources of error if plate counts and colour intensity of dilutions are incorrect or Precautions taken to prevent this from happening. ( this is not a graded assignment)