The impact of public health measures in the United States has resulted in a/an ________ in infectious disease-related deaths over the past 100 years.
A. no change
B. increase
C. decrease
Answer: C
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Which of the following epithelial tissues secretes mucous and is dense with cilia?
A. cuboidal B. squamous C. simple D. stratified E. pseudostratified columnar
During transduction, what determines the volume (intensity) of the stimulus transmitted to the brain?
a. the volume of ions released by the individual cells b. the angle of the bend of the stereocilia c. the number of hair cells stimulated d. the wavelength in the vibration of the basilar membrane
Which type of plant hormone is structurally similar to adenine?
a. brassinosteroid b. abscisic acid c. ethylene d. cytokinin e. systemin
About how long does the average red blood cell live?
a. 4 days b. 4 weeks c. 4 months d. 1 year e. 4 years