Viruses are usually described as nonliving because they:
a. do not have a cell wall.
b. are unable to self-replicate.
c. must create endospores to survive.
d. cannot live without another living organ-ism.
ANS: B
Viruses must invade a living organism to replicate. This is the reason that they are described as nonliving. They do have a wall-like structure that is made of protein. They do not create endo-spores and are able to live outside a host; however, they cannot replicate outside of a host.
You might also like to view...
Select the most appropriate action for the results in Question 18:
a. Report the results. b. Lyse the red cells manually and rerun. c. Warm sample to 37° C and rerun. d. Replace plasma with saline and rerun.
____ is an increased amount of fluid or blood in the pericardial sac surrounding the heart.
A. Pericardial effusion B. Stenosis C. Pulmonary hypertension D. Thrombosis