Microorganisms can be found growing at almost any pH.
A) True
B) False
A) True
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Sometimes atoms gain or lose particles. The loss of which of the following would result in a change of atomic mass?
A. neutron B. proton C. electron D. a and b E. b and c
The heritability of body size is 0.2 in Atlantic silversides. What would happen in figure (b) if this heritability was 0.8?
A. The changes in average size would occur more rapidly. B. The fish would avoid predation. C. The fish would never get as large under the same environmental conditions. D. The changes in average size would occur more slowly. E. No changes in average size would occur.
Greater force of contraction comes when
A. more motor units are activated. B. motor units are stimulated for a longer time. C. more ATP is available. D. motor units have few muscle fibers per unit. E. sacromeres are longer.
Suppose a population of a new plant is found on an island. DNA sequencing determines that this plant shares a limited number of genes with plants on the mainland. Within the species, there is great genetic variability. This would suggest that
A) this plant species has been isolated on the island for a long period of time. B) DNA sequencing is unreliable for determining genetic linkages. C) this new species is more closely related to animals. D) this plant species is very closely related to plants on the mainland.