Which of the following diseases are bacterial in origin?
a. cholera, streptococcus, and HIV-AIDS
b. cholera, streptococcus, and tuberculosis
d. cholera, streptococcus, and malaria
Ans: b. cholera, streptococcus, and tuberculosis
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An individual basidium ultimately produces:
A. eight diploid spores B. four genetically identical haploid spores C. four haploid spores, each genetically different D. eight identical haploid spores E. eight haploid spores, of which there are two each of four different genetic types
When an impulse passes from one neuron to the next,
it a. passes directly from dendrite to axon. b. passes from axon to cell body to dendrite. c. bypasses the cell bodies of both. d. passes from the output zone of one to the input zone of the other. e. undergoes repolarization.
The stomach and liver are located in which body cavity?
a. cranial b. thoracic c. spinal d. abdominal e. pelvic
Currently the only predators of Galápagos marine iguanas are Galápagos hawks. Iguana body size is not correlated with risk of hawk predation, although small iguanas can sprint faster than large iguanas
If predators (for example, cats) that preferably catch and eat slower iguanas are introduced to the island, iguana body size is likely to _____ in the absence of other factors; the iguanas would then be under _____ selection. A) increase; directional B) increase; disruptive C) decrease; directional D) decrease; disruptive