Biology CLEP Prep Practice Exam

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Are you gearing up for the Biology CLEP exam? Prepare like a pro with our Biology CLEP Prep Practice Exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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Which of the following is NOT an example of an ion?

Sodium
Hydrogen
Chloride
Glucose

The correct answer is: Glucose

An ion is an atom or molecule that has an unequal number of protons and electrons, giving it a positive or negative charge. Sodium, hydrogen, and chloride are all examples of ions because these elements have lost or gained an electron to form a positive or negative charge. Glucose, on the other hand, is a non-ion because it does not have an unequal number of protons and electrons. It remains electrically neutral and therefore is not an example of an ion. This makes option D the correct answer.