Harmful algal bloom toxins are produced by:
a. diatoms.
b. coccolithophores.
c. amoebas.
d. dinoflagellates.
e. radiolarians.
D
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The treatment for pneumonia caused by Pneumocystis jiroveci in AIDS patients is
A. Amantadine B. Combination of trimethoprim and sulfisoxazole C. Streptomycin D. Miconazole
Bacteria like E. coli have an average generation time of 24 hours.
Answer the following statement true (T) or false (F)
Jacob had just finished his lab work and went to the sink to wash his hands. He removed his watch, and added liquid soap to his hands. He then turned on the water and began to rub his hands together, lathering for 20 seconds and cleaning fronts and backs of hands, fingernails, and between his fingers. He then rinsed his hands in running water, dried his hands with paper towels, and used an additional paper towel to turn off the faucet. Which statement is correct?
Jacob wasted paper towels by using one to turn off the faucet. Jacob did everything correctly. Jacob should have washed his hands for at least a minute. Jacob should have wet his hands in running water before applying the soap.
Neutrophils are inhibited from gathering at the site of infection by Mycobacterium tuberculosis by what virulence factor of the pathogen?
A) mycolic acid B) cord factor C) kinase D) the capsule E) hemolysin