The table shows all of the major divisions of green plants, with examples nested within the categories. Using this diagram, how would you describe spike mosses?
a. land plants that are non-vascular seedless pterophytes
b. land plants that are seedless non-vascular bryophytes
c. land plants that are vascular seedless lycophytes
d. land plans that are vascular, have seeds, and are angiosperms
c. land plants that are vascular seedless lycophytes
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Although Sulfolobus solfataricus grows at pH 2 to 4, it maintains a cytoplasmic pH of about 2, thereby generating a large pH gradient across the plasma membrane.
Answer the following statement true (T) or false (F)
Why are alveoli arranged in small grape-like clusters?
A) increase chest volume and elasticity (resilience) B) maximize surface area C) maximize density and volume D) maximize surface area and minimize thickness E) increase tidal volume
What components make up a nucleotide?
A) a sugar and a phosphate group only B) a nitrogenous base and a phosphate group only C) a nitrogenous base and a sugar only D) a sugar, a nitrogenous base, and a phosphate group
The probability of extinction via predation is particularly high when:
a. Predator and prey coevolved over long periods of time. b. Prey populations are stressed by additional environmental factors. c. Predators are a new arrival to the prey's habitat. d. The prey species is long lived and has a low birthrate. e. B, C, and D.