Solve the Problem $1 \frac { 1 } { 2 }$

question 157

Multiple Choice

Solve the problem.
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Three boards are used as shelves in a bookcase. Each one is $1 \frac { 1 } { 2 }$ inches thick and the shelves are evenly spaced. If the height, $h$ , of the bookcase is 30 inches, how much space is between each shelf?

• A) 15 inches
• B) \(12 \frac { 3 } { 4 }\) inches
• C) 9 inches
• D) 10 inches

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Definitions:

ATP

Adenosine triphosphate, a molecule that stores and transfers energy within cells, enabling various cellular processes.

Passive Transport

The movement of substances across a cell membrane without the need for energy input, typically along the concentration gradient.

Plasma Membrane

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

Water-soluble Ions

Ions that dissolve in water, important in biological processes and the functioning of cells.