Experiments on competition among species within a community reveal that
A) removing a group of species has relatively little effect on a community.
B) removing a single species has a stronger effect than removing a group of species from a community.
C) removing a group of species has a stronger effect than removing a single species from a community.
D) removing a single species has relatively little effect on a community.
C
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Solenopsis invicta or red imported fire ants
(RIFAs) are extremely successful in the United States because they
a. are resistant to attacks from predators. b. are resistant to most pesticides. c. never get troubled with diseases. d. are resistant to attacks from predators and never get troubled with diseases. e. have all of these characteristics
The theory of island biogeography predicts that the extinction rate is greater on large islands than on small islands
Indicate whether the statement is true or false
Nociceptors:a
may be thermal, mechanical, or even chemical. b. always result in the perception of pain. c. transmit signals directly to interneurons in the brain when stimulated. d. are immune to sensitization. e. are insensitive to endogenous opiates, but can be suppressed by synthetic forms.
Considering the ATP cycle, which of the following would have the most potential energy to perform work for cell activities?
a. ATP b. ADP c. AMP d. adenosine