An adult animal that possesses bilateral symmetry would most likely be _____
A) triploblastic
B) a deuterostome
C) coelomates
D) diploblastic
Answer: A
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Scientists attempted for many years to conduct nuclear transplants but failed. However, geneticists had success in cloning a sheep. They were successful because they
A. picked a cell very early in development. B. replicated the blastomeres before insertion. C. delayed transcription in the blastomeres. D. treated the nucleus with sheep plasma before nuclear insertion. E. utilized a new micro pipette technique.
Transport of materials through an epithelial cell is called ________.
Fill in the blank(s) with the appropriate word(s).
Place these steps of enzyme catalysis in the correct order:
1. The substrate and enzyme change shape. 2. The substrate enters the active site. 3. The enzyme reverts to its original configuration. 4. The product is expelled. A) 2, 1, 4, 3 B) 1, 3, 4, 2 C) 2, 3, 1, 4 D) 1, 2, 3, 4 E) 2, 1, 3, 4
All of the following are correct about Type O blood, except
A) Persons with this type of blood are considered universal donors. B) Persons with this type of blood have anti-A and anti-B antibodies in their plasma. C) This is the most common blood type among all racial groups in the U.S. D) Persons with this type of blood carry an O antigen on their RBC.