In classification, the taxonomic group just below family is
A. species.
B. class.
C. order.
D. genus.
E. phylum.
Answer: D
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One factor that seems to aid in maintaining lipid stability in hyperthermophilic Archaea is that dibiphytanyl tetraether lipids form a(n)
A) covalently bonded monolayer cytoplasmic membrane. B) interlocking bilayer cytoplasmic membrane. C) interlocking lattice with the cell wall. D) pseudomembrane immediately inside the cytoplasmic membrane.
Which of the following would NOT be expected to affect primary production?
A. biomass of primary consumers B. biomass of producers C. nutrients D. water E. sunlight
Which of the following is the effect of El Niño?
A. More nutrient-rich cold water wells up along South America’s west coast B. Western Pacific waters cool C. Less rain in western South America D. Easterly trade winds weaken or reverse E. More rain in Australia
Lysosomes are specialized ____.
A. ribosomes B. peroxisomes C. Golgi bodies D. vesicles E. plastids