Although often single celled, protists are clearly different from bacteria because _____.
A) protists can move using extensions of the cell
B) the cells of all protists have a nucleus
C) protists sense their external environment and respond accordingly
D) protists can reproduce
E) protists organize into populations
Answer: B) the cells of all protists have a nucleus
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Indicate whether the statement is true or false.
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The biotic portion of an ecosystem includes the plants, animals, and water
Indicate whether the statement is true or false