In which stage of the general adaptation syndrome has the body reached the limits of its ability to adapt to stress, which may result in the development of stress-related diseases?
a. resistance
b. alarm
c. collapse
d. exhaustion

The goal of the flu vaccine is to prevent you from becoming infected with influenza. select the best answer from the choices provided. t f

You should never drive a car if you are a. taking cold medication b. suffering from the flu c. drinking alcohol d. all the above

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