What would be a primary advantage of passive immunity with diseases such as tetanus or botulism?
A.
Time. You can quickly neutralize the toxin with a passive administration of antibodies to save the patient's life when none is available for them to make their own active immune response.
B.
Cost. It's far cheaper to administer a dose of antibodies harvested from the serum of an actively immunized animal or human than it is to administer a vaccine.
C.
Safety of delivery. It's far safer to administer a dose of antibodies harvested from the serum of an actively immunized animal or human than it is to administer a vaccine.
D.
Handling of treatment. It's difficult to keep vaccines stored properly to keep their potency, especially in Third World countries without adequate "cold chains" for transport into jungles and deserts. It's much easier to keep a batch of antibodies stable, even in extremes of heat and humidity.
A
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Fire ants, Solenopsis invicta, ________
a. have no natural enemies b. disrupt natural communities when introduced c. have a sting that is usually fatal d. are native to the United States
A human cell has a mutation in the gene that encodes the enzyme that generates lactate from pyruvate, rendering that enzyme completely non-functional. Assuming that there is ample glucose present, how would this cell generate energy in the presence of oxygen?
A. Primarily through the break down of proteins into amino acids B. Glycolysis coupled with ethanol fermentation C. Aerobic respiration D. This cell would have no way to generate energy under these conditions because it cannot carry out the reactions needed for glycolysis
The collecting duct empties its contents into
A. the ureter. B. the renal sinus. C. the papillary duct. D. an afferent arteriole. E. the renal corpuscle.
Examine the phylogenetic tree depicted in Figure 26.17 as you address the following questions. The ability to produce methane is constrained to Archaea that optimally grow at temperatures ranging from 20-60 °C
A. true B. false