What Percentage of Teens Use the Internet and Online Communication

question 111

Multiple Choice

What percentage of teens use the Internet and online communication to isolate themselves from their families and classmates?

• A)15%
• B)25%
• C)40%
• D)60%

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Definitions:

Facilitated Transport

A process of passive transport, mediated by carrier proteins, that allows substances to move across cell membranes without expending energy.

Active Transport

The movement of molecules across a cell membrane from a lower to a higher concentration, requiring energy.

Mitochondria

Organelles within cells that are the sites of aerobic respiration, providing energy for cellular functions.

Concentration Gradient

A variation in the concentration of a substance across a distance, leading to the movement of particles from an area of high concentration to one of lower concentration.