Action potential propagation is the fastest in ____
a. a myelinated axon with a small diameter
b. an unmyelinated axon with a small diameter
c. a myelinated axon with a large diameter
d. an unmyelinated axon with a large diameter
e. all myelinated axons regardless of diameter
ANSWER: c
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Archaea, Bacteria, and Eukarya are:
A. phyla B. kingdoms C. families D. domains E. none of the options listed
Why might Candida albicans become pathogenic in an individual receiving antibacterial medications?
A. This fungal organism can actually utilize the destroyed bacterial cells as a nutrient source and begin to multiply out of control. This can cause a pathogenic state. B. This is an opportunistic pathogen not normally found in normal microbiota. As such, when the bacterial normal microbiota is wiped out by broad-spectrum antibacterial drugs, this opportunist can adhere to and colonize the area left behind. C. This is a usual member of the normal microbiota. However, when the bacterial members of the normal microbiota are wiped out by a broad-spectrum antibacterial drug, this fungal cell type has little to no competition for resources in the affected area. As such, it quickly overgrows and can cause a pathogenic state. D. This is a protozoan species and part of the normal microbiota. When the bacterial members of the normal microbiota are wiped out by a broad-spectrum antibacterial drug, this protozoan cell type has little to no competition for resources in the affected area. As such, it quickly overgrows and can cause a pathogenic state.
What feature is common to all the alveolates?
a. autotrophy b. lung-like sacs used for respiration c. bioluminescence d. complex life cycle with two hosts e. membrane-bound sacs beneath the plasma membrane
Members of the Euglenozoa move within their habitats with the aid of
A. flagella. B. tests. C. cilia. D. pseudopodia. E. pellicles.