During which phase do chromosomes first become visible?
A) Interphase B) Prophase C) Telophase D) Metaphase
B
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Which of the following has the smallest ecological footprint?
A) United States B) Canada C) Finland D) Qatar E) Bangladesh
When sodium ions diffuse into the axon’s
cytoplasm, the cytoplasm becomes
a. more positively charged. b. more negatively charged. c. neutrally charged. d. impermeable to more sodium ions. e. more than one of these
The portion of tooth projects above the gum is called the called the
A. dentin B. pulp c. crown D. enamel E. cementum
A large canopy tree falls in a deciduous forest in Great Smoky Mountains National Park, opening a gap in the forest canopy. The drier, warmer, sunlit environment thus created is favorable to establishment of successional tree species. Whenever deaths of individuals alter the environment, as in this example, the result is what ecologists refer to as a __________ pattern.
A) primary B) secondary C) catastrophic D) mosaic