The ratio of toxic dose to therapeutic dose is called the
A. therapeutic index.
B. phenol coefficient.
C. susceptibility quotient.
D. toxicity index.
Answer: A
You might also like to view...
The presence of long double-stranded RNA (> 30 bp)
A. indicates infection by an RNA virus other than a retrovirus. B. indicates infection by a virus. C. indicates exposure to mutagens. D. induces synthesis of interferon. E. indicates infection by an RNA virus other than a retrovirus AND induces synthesis of interferon.
What are the specific environmental consequences of a phytoplankton bloom?
a. An increase in phytoplankton acidifies ocean water. b. Phytoplankton are decomposed by aerobic bacteria, which depletes the surrounding water of oxygen. c. Phytoplankton fix nitrogen in the water causing nitrification. d. Phytoplankton are decomposed by anaerobic bacteria which enriches the surrounding water with oxygen. e. Phytoplankton use up hydrogen ions, which decreases the acidity of the surrounding water.
Single-celled or colonial protists that have a two-part silica shell and are often photosynthetic are called ________
a. diatoms b. flagellated protozoans c. amoebas d. green algae
Antitoxins
A. include capsule material against the pneumococcus and meningococcus. B. contain purified, chemically denatured bacterial exotoxin. C. contain antibodies to neutralize specific toxin. D. use vaccinia virus with genetic material of bacterial toxins. E. contain attenuated organisms.