Aziz, a cafeteria manager, wants to implement a food defense program to ensure food safety at his establishment. He is using the ALERT tool to help him design the program. Which two guidelines can he include under the term “Threat”? 1. Provide training to staff on detecting potential security violations.
2. Contact regulatory authorities immediately after suspecting a danger.
3. Allow access to food prepping and storage areas to only a few employees.
4. Keep and regularly update office files and documents.
5. Create and regularly update a list of emergency contacts.

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