Choanoflagellates have been important for the study of cell communication evolution because
choanoflagellates have:a.
signal transduction pathways unlike those in other bacteria.
b. signaling molecules similar to those of other protists.
c. signal transduction pathways that interfere with the cells they infect.
d. protein kinases similar to those in animals.
e. G proteins different from those in prokaryotes.
D
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Water held behind a dam would best reflect ______.
A. heat energy B. mechanical energy C. chemical energy D. potential energy E. kinetic energy
Nitrogen-containing bases between two complementary DNA strands are joined by
a. polar covalent bonds. b. hydrogen bonds. c. phosphate groups. d. deoxyribose sugars.
Prokaryotes have a –10 and –35 consensus sequence in their promoter. What are the three eukaryotic promoter sequence elements (or "boxes")?
What will be an ideal response?
A eusocial animal ______.
A. lives alone B. works alone C. breeds continuously D. lives within a group with a reproductive division of labor E. least likely to exhibit altruistic behavior