Epithelial cells that are adapted for absorption or secretion usually have ________ at their free surface.
a. mitochondria
b. cilia
c. microvilli
d. junctional complexes
e. Golgi complexes
Answer: c. microvilli
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Which phylum harbors the MOST functional diversity observed and also has the MOST cultured representatives?
A) Actinobacteria B) Bacteroidetes C) Firmicutes D) Proteobacteria
Blood cultures are collected from a 36-year-old patient suspected of having a disseminated fungal infection. History reveals that she was exposed to bird droppings and may have inhaled the conidia. What is the best blood culture system to use to ensure optimal recovery of this pa-thogen?
a. BACTEC b. BacT/ALERT c. ESP system d. Isolator system
The impact of natural selection is demonstrated by
a. directional selection. b. stabilizing selection. c. neutral selection. d. disruptive selection. e. directional selection, stabilizing selection, and disruptive selection.
The amount of energy needed to maintain basic metabolic functions is the
a. basal metabolic rate. b. body mass index. c. thermic effect of food. d. basic body index. e. metabolic ratio.