Which portion of the figure above may ultimately be better depicted as a "ring"?
A) the bacterial lineage
B) the archaean lineage
C) the eukaryotic lineage
D) the trunk of the tree
D
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Animals with bilateral symmetry typically undergo an evolutionary process whereby many nerve cells and sensory structures become concentrated at the front of the body. What is this process called?
a. segmentation b. cephalization c. coelom formation d. pupation e. radiation
The letter "A" in the above figure represents
a. transverse. b. radial. c. tangential. d. elliptical. e. obtuse.
Reactions involving electron removal are called ________ reactions.
A. dehydration B. decomposition C. reduction D. dissolution E. oxidation
Induction often occurs for ________ pathways, whereas repression is more common in ________ pathways
a. anabolic / biosynthetic b. anabolic / catabolic c. biosynthetic / anabolic d. catabolic / anabolic