The basic conceptual approach to phylogenetic tree building assumes that:
a. the logic that species with many character states in common are more closely related than those without.
b. common characters are homologies.
c. Both of the above.
d. None of the above.
C
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Which component of cholesterol would classify it as a lipid?
A) carbohydrates B) phosphates C) glycerol D) hydrocarbons
A chemical fuel that allows the body cells to do work and to function is known as
a. RNA b. ATP c. endocrine d. DNA e. H20
Which is not true of viruses?
A. They can exist in an intracellular or extracellular phase. B. They infect animal and plant cells only. C. They are acellular. D. They can be observed with an electron microscope. E. They replicate only inside host cells.
____ is the process by which experience leads to a change in behavior
Fill in the blank with the appropriate word.