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You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv

During polarization,potassium has a blank charge,sodium has a blank ch arge ,and calcium has a b l ank. charge

Letter of interest cover letter follow-up letter you letter send it to favorably influence employers’ decision on hiring you arrowright state how you meet the job requirements arrowright send 3-5 days after submitting your application or résumé arrowright express your desire to work for a particular company arrowright reset next