The evolutionary link between unicellular and multicellular life was probably __________.
A. development of a specialized feeding mechanism
B. development of a specialized method of waste disposal
C. development of colonial forms where unicellular protists stuck together
D. development of a specialized method of gas exchange
C. development of colonial forms where unicellular protists stuck together
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Eggs have receptors that recognize surface proteins on sperm of their own species. This illustrates ____
a. behavioral isolation b. gametic isolation c. hybrid breakdown d. hybrid inviability e. hybrid sterility
What is the difference between embryo cloning and adult cloning?
What will be an ideal response?
____ is a cell engulfing large solid materials, and ____ is a cell engulfing materials dissolved in solution.
A. Endocytosis; exocytosis B. Exocytosis; endocytosis C. Phagocytosis; pinocytosis D. Pinocytosis; phagocytosis
Which of the following foods would have the most fiber?
a. Kidney beans b. English muffins made with enriched flour c. Orange juice d. Corn flakes