Primary cilia have a(n) ________ function and typically display a ________ structure
A) axonal; 9+2
B) motile; 9+0
C) motile; 9+2
D) sensory; 9+0
E) filopodial; 9+4
Answer: D
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Cells removed from callus that can grow into plantlets illustrates that differentiated cells can be
returned to a totipotent state.
Indicate whether the statement is true or false.The study of the body structures of the ostrich, emu and rhea shown here is an example of ____
a. morphological divergence b. comparative morphology c. anatomical convergence d. biogeography e. radiometric dating
While examining a rock surface, you have discovered an interesting new organism. Which of the following criteria will allow you to classify the organism as belonging to Bacteria but not Archaea or Eukarya?
A) Cell walls are made primarily of peptidoglycan. B) The organism does not have nucleus. C) The lipids in its plasma membrane consist of glycerol bonded to straight-chain fatty acids. D) It can survive at a temperature over 100°C.
What synapomorphy (shared, derived trait) distinguishes animals as a monophyletic group, distinct from choanoflagellates?
A. no cell walls B. multicellularity C. heterotrophy D. coloniality