Cf alert on EmilythePrincess12

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

The medical procatice that focuses are the care of the newborn child who is born premature is known as

Which should you do if you decide that the stresses and problems in your life are too much to manage? forget about the stress and hope it will eventually go away. find someone to talk to. try taking a depressant like heroin to you relax. take a hallucinogen, like pcp, to take your mind off things.