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To make air powder polishing more effective and comfortable, the angle of the tip to the tooth is important.  What are the recommended angles? 

A small protein channel that allows signals to travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell is a/ an

A. Explain the importance of semiconservative complementary replication. (2 pts) B. Describe the steps and enzymes needed for replication. (3 pts) C. Give a detailed explanation of the role semiconservative complementary replication plays in the six characteristics of life. (4 pts)

Which one of the following is a correct matching of an organelle and its function?

When ATPase is used in a reaction, it decreases the potential energy of the system.

What do ALL hormones have in common?

Which one of the following is NOT a possible function of the extracellular matrix in animal cells?

The use of a carrier protein to move solute molecules across the plasma membrane from areas of high to low concentration is known as:

In ionic bonding, 

A. Describe the purpose of signal transduction and how it differs from cell-to-cell communication. (4 pts) B. Discuss the key step (s) in a signal cascade. (1 pts)