All protists
A. are prokaryotes.
B. lack a nucleus.
C. lack membrane-bounded organelles.
D. are eukaryotes.
E. are multicellular.
Answer: D. are eukaryotes.
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Archaeons are not known to incorporate (fix) carbon dioxide.
Answer the following statement true (T) or false (F)
Select all of the following that are characteristics of chordates.
_____ notochord. _____ protostome development. _____ dorsal hollow nerve cord. _____ post anal tail. _____ pharyngeal slits.
Fats are major components of the cell’s
a. membranes. b. cytoplasm. c. proteins. d. ribosomes. e. mitochondria
What is the significance of the minerals present in hydrothermal vents in the surface metabolism model of chemical evolution?
provided kinetic energy for the formation of organic molecules. B) The minerals helped catalyze the formation of organic molecules. C) The minerals helped nonpolar molecules dissolve in water. D) The minerals became incorporated into functional groups.