Which Statement About Attention-Deficit Hyperactivity Disorder (ADHD)is True

question 6

Multiple Choice

Which statement about attention-deficit hyperactivity disorder (ADHD) is true?

• A) All children with ADHD are hyperactive.
• B) Fraternal twins are more likely than identical twins to have ADHD.
• C) Boys are diagnosed with ADHD two to three times as often as girls.
• D) For a child to be diagnosed with ADHD, symptoms must appear before age 5.

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Definitions:

Plasma Membrane

The lipid bilayer membrane surrounding a cell, controlling the passage of substances in and out of the cell.

ATP-Powered Pumps

Membrane proteins that use the energy from ATP hydrolysis to transport ions or molecules across cell membranes against their concentration gradients.

Transport Proteins

Proteins that are involved in the movement of ions, small molecules, or macromolecules, such as nutrients and drugs across cell membranes.

Plasma Membrane

A semi-permeable membrane surrounding a cell, responsible for controlling the passage of substances in and out.