Which of the following groups contains organisms that produce free-living larvae?
a. cnidarians
b. echinoderms
c. arthropods
d. cnidarians and echinoderms
e. cnidarians, echinoderms, and arthropods
Answer: e
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Which of the following threats to biodiversity is attributed to increased mobility and trade?
a. habitat loss b. global climate change c. introduction of exotic species d. overharvesting
Darwin's ideas on evolution were advanced for his time. His approach to science and natural selection were supported by what main tenet?
A. The world is fixed and constant. B. Operation of natural laws produces constant change and improvement. C. Species were unchangeable over the course of time. D. Various organisms and their structures resulted from a spontaneous action.
Microorganisms often grow on more complex molecules than glucose. Sometimes these nutrition sources are lipids. However, before the lipid can be metabolized, its fatty acid side chains must be broken down by the ___ cycle to Acetyl-CoA
a) tri-carboxylic acid b) citric acid c) glyoxylate d) Beta-oxidation e) reductive tri-carboxylic acid
Overall brain size across mammals (e.g., an elephant vs. a bat) is a good predictor of behavioral complexity.
Answer the following statement true (T) or false (F)