Normal bacterial flora are clinically beneficial because they produce:
a) antibodies
b) bacteriocins
c) cytokines
d) antihistamine
Answer: b) bacteriocins
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If you put some water in a bucket and left it in your backyard, the water level would rise and fall over time with the weather. The table represents data collected from a bucket that was initially filled to the halfway mark with water. The water depth was measured on the last day of the month for 2 years. Although the water never completely dried up, it also never overflowed during this time. Answer the following question(s) based on the data.MonthWater Level (cm)MonthWater Level (cm)130133822414393201537424164852617486291849735195582820459312147103422501138235512372451Which statement most likely explains the general upward trend of the data over the 2-year time period?
A. Evaporation exceeded transpiration. B. Precipitation exceeded evaporation. C. Transpiration exceeded precipitation. D. None of these statements explains the upward trend.
Which type of chemical bond is responsible for zipping together the two strands of a DNA molecule?
a. ionic b. covalent c. hydrogen d. van der Waal interactions
Shrimps, crabs, and lobsters are examples of ____
a. cephalopods b. gastropods c. mollusks d. arachnids e. crustaceans
Of the following parts of the GI tract, the greatest amount of nutrient absorption takes place in the
a. stomach. b. small intestine. c. colon. d. pancreas. e. esophagus.