Dead Artemia cells that have been treated with trypan blue appear
(a) colorless.
(b) blue.
(c) red.
(d) indistinguishable from living treated cells.
(b) blue.
You might also like to view...
Organisms such as Streptococcus pyogenes and Staphylococcus aureus that produce leukocidins are called ________ pathogens
A) pyogenic B) radical C) enterotoxigenic D) hemorrhagic
Which of the following is incorrectly paired?
a. villi—increase surface-to-volume ratio for absorption of nutrients b. pancreas—secretes substances that neutralize stomach acid c. gallbladder—produces bile that breaks down fat globules d. colon—functions in water reabsorption
A 67-year-old diabetic man develops intense pain and swelling on his calf, which acquires a bronze discoloration and develops significant tissue necrosis with hemorrhagic bullae and gas production (gas gangarene). Which of the following is the important contributing agent?
A. Clostridium perfringens B. Clostridium difficile C. Clostridium botulinum D. Clostridium tetani
True or False: The two most common causes of laboratory accidents are ignorance and carelessness
a. TRUE b. FALSE