The choanoflagellates are in the supergroup:
A. Opisthokonta
B. Rhizaria
C. Amoebozoa
D. Stramenopila
E. Alveolata
A. Opisthokonta
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The stems and leaves of plants, called the ________, provide a habitat for a wide variety of microorganisms.
A. microbivory B. rhizosphere C. phyllosphere D. plant crust
A single common ancestor evolving into the current 28 species of silversword plants found among the Hawaiian islands is an example of
A. gradualism. B. adaptive radiation. C. extinction. D. a prezygotic barrier to evolution. E. punctuated equilibrium.
The circulatory system of a whale is considered an organ system because it is composed of different
a. cells. b. tissues c. organs d. molecules
Which of the following best defines what occurs during translation?
a. RNA is used to make a polypeptide. b. RNA is used to make a DNA strand. c. DNA is used to make a polypeptide. d. A polypeptide is used to make RNA.