SAT Subject Biology Practice Question 9: Answer and Explanation

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Question: 9

4. How can a water molecule BEST be described?

I. It is nonpolar.

II. It has an equal electron distribution.

III. It is able to form hydrogen bonds.

A. I only
B. II only
C. III only
D. I and II
E. I and III

Correct Answer: C


Water is polar, meaning that it has an unequal distribution of electrons. This helps it to form hydrogen bonds.

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