A genus can best be defined as
A) a taxon composed of families.
B) a taxon composed of one or more species and a classification level lying below family.
C) a taxon belonging to a species.
D) a taxon comprised of classes.
E) the most specific taxon.
B
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Which is the correct order for these steps in cell signaling?
A. signal transduction, receptor activation, response B. response, signal transduction, termination C. receptor activation, response, signal transduction D. receptor activation, signal transduction, response
The components of membranes that account for
most of their active functions are a. carbohydrates. b. sterols. c. proteins. d. fats. e. phospholipids.
What was the reason Darwin was sailing aboard the HMS Beagle?
a. He was a naturalist. b. He was a geologist. c. He was the captain's personal physician. d. He was the captain's dining companion.
Flying insects typically _____
A) decrease metabolism as much as 200-fold during flight B) switch from diffusion of tracheal gases to active transport during flight C) utilize high numbers of mitochondria in flight muscles D) generate fuel molecules from catabolism of carbon dioxide