Similar to a Mechanical Mouse That Has a Ball on the Bottom

question 28

Multiple Choice

Similar to a mechanical mouse that has a ball on the bottom, a particular kind of stationary pointing device has a ball on its top or side. What kind of pointing device is this?

• A) trackball
• B) touchpad
• C) optical mouse
• D) stylus

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Definitions:

Solute Concentration

A measure of the amount of a solute that is dissolved in a solvent, determining the solute's proportion in a solution.

Selectively Permeable Membrane

A membrane that only allows specific molecules or ions to pass through it by active or passive transport.

Osmosis

The movement of water molecules through a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration.

Solute Molecules

Molecules dissolved in a solvent to form a solution, playing crucial roles in chemical and biological processes.