Stephanie is infected with a pathogen. How might it be determined if the pathogen is a virus
or a bacterium?
a. A virus does not have genetic material such as DNA or RNA.
b. A bacterium has ribosomes, but a virus does not.
c. A virus does not have an outer covering or capsule.
d. Bacteria are eukaryotes, and viruses are prokaryotes.
B
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Who should be vaccinated against rabies?
A. Veterinarians B. Nurses C. Physicians D. Farmers
Which of the following factors should be considered when estimating the ecological footprint of urban areas?
A. the population density of the urban area B. the amount of waste generated by the urban population C. the affluence of the urban population D. the amount of undeveloped land outside the urban boundary needed to supply ecological services to the urban population E. All of the above should be considered.
Cuticle (and/or cork) is found on the surfaces of all of the following except:
A. Leaves B. Green stems C. Woody roots D. Root hairs E. Woody stems
When blood pressure increases, what type of sensory receptor detects this?
A. an interoceptor called a baroreceptor B. an exteroceptor called a nociceptor C. an exteroceptor called a chemoreceptor D. an interoceptor called a chemoreceptor E. an exteroceptor called an osmoreceptor