In what environmental conditions are methanogens generally MOST active?
a. acidic pH
b. anoxic
c. basic pH
d. high levels of organic carbon
Answer: B
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Declining amphibian populations are correlated with four of the following. Which one is the exception?
a. habitat loss b. introduction of new species c. long-term changes in climate d. evolutionary changes in amphibians e. fungal infections and parasitic diseases
In what way are prokaryotic and eukaryotic cells different?
a. A prokaryotic cell does not have cytoplasm, but a eukaryotic cell does. b. A prokaryotic cell does not have a nucleus, but a eukaryotic cell does. c. A prokaryotic cell does not have genetic material, but a eukaryotic cell does. d. A prokaryotic cell does not have a flagellum, but a eukaryotic cell does.
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Figure 36.3
Use the figure above to answer the following question.
A fish circulatory system is indicated by the letter (s) ____.
A. A only B. B only C. C only D. both A and B E. both B and C
the small sac under the liver that stores bile
What will be an ideal response?