invertebrate biologist is conducting research with crabs. Her interest is ecdysis. This implies that she studies
A. tagmatization processes in crustaceans.
B. how ommatidia function individually in a compound eye.
C. how the HOX gene controls the fusion of the head and thorax into the cephalothorax.
D. how ocelli evolved from mere photoreceptors to imaging lens.
E. the molting process.
E. the molting process.
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Which of the following is a disadvantage of using corn to manufacture ethanol as a fuel additive?
A. Ethanol contains far less energy than other fuels. B. Ethanol absorbs water and would thus corrode fuel pipelines used in transport. C. Use of corn as a fuel source drives up the cost of grain worldwide. D. All of these are disadvantages.
What signaling pathway commonly makes use of a G protein to transduce the signal?
A. Steroid hormone receptor pathways B. Receptor tyrosine kinase pathways C. Channel-linked receptor pathways
When hermit crabs crawl across the ocean floor, they often have sea anemones attached to their backs. The anemones use their dangerous tentacles to keep hermit crab predators at bay, and they dine on the particles of food that the crab does not eat. This
is an example of A) bioremediation. B) alternation of generations. C) symbiosis. D) endosymbiosis.
_____ are forms of an element that differ in the number of neutrons that they carry
Fill in the blank(s) with correct word