Infected, but shows no symptoms of disease
A. Passive Carrier
B. Asymptomatic Carrier
C. Convalescent Carrier
D. Chronic Carrier
E. Incubating Carrier
B. Asymptomatic Carrier
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Also called acute necrotizing ulcerative gingivitis or trench mouth, which condition is a mixed bacterial spirochetal infection of the gingival edge?
a. Laryngitis b. Laryngotracheobronchitis c. Epiglottitis d. Vincent angina
Which of the following is the best light for plant
growth according to the results of Engelmann’s investigation? a. blue b. green c. yellow d. orange e. mostly violet with some red
What type of infectious agent causes potato spindle tuber disease?
A. Viroid B. Prion C. Virus D. Virino
Matching. Choose the one most appropriate answer
for each. 1. ___ amplitude 2. ___ cochlea 3. ___ eardrum 4. ___ iris 5. ___ oval window 6. ___ pheromone 7. ___ hammer 8. ___ pitch 9. ___ retina 10. ___ round window 11. ___ semicircular canals A. dissipates excess vibrational energy to the middle ear B. contains the organ of Corti C. separates the outer and middle ears D. membrane-covered gateway to inner ear E. consists of tissue containing rods and cones F. bone in middle ear G. peak height and valley depth of sound waves are its basis H. maintain balance and position; detect acceleration I. depends on the number of wave cycles per second J. a substance that elicits a response in members of the same species K. regulates size of pupil and amount of incoming light