A ____ is an extension of a lobe of the cytoplasm, which is used by some protists for movement
a. gullet
b. pseudopod
c. cilium
d. pilus
e. flagellum
ANSWER: b
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Which of the following is most likely to take up an electron from another atom?
a. chlorine (7 valence electrons) b. calcium (2 valence electrons) c. neon (8 valence electrons) d. carbon (4 valence electrons) e. potassium (1 valence electron)
Two formal terms used to describe categories of mutational nucleotide substitutions in DNA are ________
A) error prone and spontaneous B) sense and antisense C) base analogs and frameshift D) euchromatic and heterochromatic E) transversions and transitions
what are the four biological macromolecules?
What will be an ideal response?
When two species of orchids with different floral anatomy are considered, which type of reproductive barrier is involved?
a. gametic b. temporal c. behavioral d. habitat e. mechanical