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QUESTION 1: An Hfr strain is used to map three genes in an interrupted matingexperiment. The cross is Hfr/a+ b+ c+ rif X F-/a- b- c- rifr. (Nomap order is implied in the listing of the alleles; rifr isresistance to the antibiotic rifampicin.) The a+ gene is requiredfor the biosynthesis […]

Select a toxicant that can be classified as an air,water or soil pollutant or an organic solvent .Discuss the exposure limits of this toxicant ,how an individual may be exposed and toxic effects .Also discuss the possibility of the toxicant being a carcinogen and risk assessments would be involved in […]

Taxonomy Lab to Show Organism Relationships Table 1: Phylum/Class Sample 1: Chrysophyta Sample 2: Annelida Sample 3: Arthropoda Sample 4: Amphibia Sample 5: Aves CommonFeature           NutritionHow does the organism break down and absorb food?           Circulatory System (Transport)How does the organism […]

Question: In the last stage of cellular respiration, oxidative phosphorylation, all of the reduced electron carriers produced in the previous stages are oxidized by oxygen via the electron transport chain. The energy from this oxidation is stored in a form that is used by most other energy-requiring reactions in cells.From the […]