The Water Strider Is an Insect That Skates Across the Water

question 42

Multiple Choice

The water strider is an insect that skates across the water without sinking. The tips of its feet must be coated with molecules that are

• A) ions.
• B) hydrophilic.
• C) hydrophobic.
• D) basic.
• E) acidic.

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Definitions:

Crackers

A thin, crisp biscuit often made from flour and water that can be salted or savory, and is commonly served with cheese or other spreads.

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A statistical measure of the dispersion or variability within a dataset, indicating how spread out the data points are from the mean.

Hours

A unit of time equal to 60 minutes.

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Electronic devices that can store, retrieve, and process data, and execute programmed instructions.