Which teeth play an important role in speech?

________ are important because cells, especially those in the nerves, heart, and muscles,

use them to maintain voltages across their membranes and to carry electrical impulses (nerve impulses, muscle contractions) across themselves and to other cells. a. Electric currents b. Electronics c. Electrolytes d. Enzymes

What viral structure makes some viruses very susceptible to freezing?

A) Capsid B) Virion C) Envelope D) Nucleocapsid