What are two benefits to a germicide that quickly evaporates compared to a germicide that leaves a residue behind?
What will be an ideal response?
A germicide that quickly evaporates is capable of working to kill microbes and then leaves no trace behind. This reduces the chances that microbes would be able to evolve an immunity to the germicide because of their limited contact with the chemical. A second benefit would be that there is no rinse step required before the next patient comes into contact with the equipment.
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Specific regions on an antigen molecule to which the immune response is directed are
A. antigenic determinants. B. an autoimmune response. C. monomers. D. allergens.
The evolution of organisms that use oxygen in their respiration was possible only because of the action of a group of bacteria that produced oxygen and changed the Earth's atmosphere from an anoxic one to one rich in oxygen. That group of bacteria was:
A. cyanobacteria B. spirochaetes C. proteobacteria D. Staphylococcus E. actinobacteria
The anatomical structure identified with the letter "C" in the accompanying figure illustrates ____
a. sickle-cell anemia b. leukemia c. atherosclerotic plaque d. bone cancer e. polycythemia
Which of these is not part of loose connective tissue?
A. Reticulin B. Collagen C. Adipose cells D. Elastin E. Chondroitin