List some structures that distinguish bivalves from the other molluscan classes.
What will be an ideal response?
Valves and a laterally flattened body.
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All chemoautotrophs and photoheterotrophs are ____
a. archaea only b. bacteria only c. eukaryotes only d. prokaryotes and eukaryotes e. prokaryotes
Gene expression in multicelled eukaryotic cells changes in response to _____
a. conditions outside the cell b. master gene products c. operons d. conditions outside the cell and master gene products
A positive feedback loop is one that tends to amplify a process. Why would the effect of deforestation on the water cycle be considered a positive feedback loop?
A. Because deforestation leads to reduced nutrient uptake during the growing season, which results in more fertile soil. B. Because deforestation leads to new types of habitat which leads to greater species diversity. C. Because deforestation leads to an increase in the concentration of nutrients in run off, which then leads to eutrophication. D. Because deforestation leads to a decrease in precipitation, which results in further loss of vegetation.
Which of the following statements is FALSE?
A) Fluoroquinolone inhibits DNA synthesis. B) Acyclovir inhibits DNA synthesis. C) Amantadine inhibits the release of viral nucleic acid. D) Interferon inhibits glycolysis. E) Azoles inhibit plasma membrane synthesis.