In step "c" which bonding is the only one that is possible?
a. A with C
b. G with C
c. C with T
d. T with G
e. A with G
b
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Osmosis occurs as water can cross the lipid bilayer through specialized channels for water movement called ________________
A. proteins B. transmembrane carbohydrates C. membrane pores D. aquaporins
A reinterpretation of animal phylogeny (differing from morphologically based phylogeny) that was made possible by molecular techniques, was:
A. designation of the Ecdysozoa and Lophotrochozoa as clades B. designation of the Bilateria as a monophyletic group C. designation of annelids and arthropods as closely related D. designation of rotifers and nematodes as closely related E. placement of echinoderms and chordates in entirely different clades
In vertebrates, the central nervous system (CNS) consists of the ____
a. brain and spinal cord b. brain and gray matter c. spinal cord and gray matter d. brain and reflexes e. spinal cord and nerves
An optimal strategy for an animal in procuring food would involve all of the following EXCEPT:
a. securing essential nutrients. b. maximizing the size of each prey item. c. minimizing the risk of predation during foraging and feeding. d. maximizing energy gained. e. minimizing energy expended.