Which symptoms in the case below could indicate that Dorothy may be suffering from anorexia nervosa? Dorothy is a high school student. Pick one or more!

1. She is a popular girl, and is friendly and social.

2. Like many other teenagers, she loves wearing the latest fashions.

3. When trying out new clothes, she keeps looking at herself in the mirror.

4. Recently, her friends have become concerned about her drastic weight loss.

5. Yet, Dorothy keeps complaining about how fat she is - she only eats one meal a day. The rest of the day, she survives in packaged fruit juices.

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