By examining the phylogenetic tree diagrammed in the figure above, what conclusion can you draw about the species G. microti?
A) It evolved before G. intestinalis.
B) It is more closely related to G. muris than to G. intestinalis.
C) It should not be labeled a species distinct from G. intestinalis.
D) It is part of a monophyletic group that also includes G. intestinalis.
Answer: D
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It is believed that phototrophy arose approximately 3.3 billion years ago in
A) Bacteria. B) Archaea. C) Eukarya. D) LUCA.
Which of the following places was the last to be colonized by humans?
A. Madagascar B. Australia C. United States D. Scandinavia E. New Zealand
Which of the following is false of brightfield microscopy?
A) White light is utilized. B) Light passes through the object being examined. C) Phase-contrast microscopy is a variant of brightfield microscopy. D) Specimens are always viewed without being stained. E) Specimens usually must be fixed.
The position of the head with respect to gravity is detected by receptors in the basilar membrane
Indicate whether the statement is true or false.