The Aggregate Demand Curve

question 214

Multiple Choice

The aggregate demand curve

• A)slopes upward.
• B)slopes downward.
• C)is perfectly vertical.
• D)is perfectly horizontal.

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Definitions:

ATP

Adenosine triphosphate, a molecule that stores and transfers energy within cells, crucial for muscle contraction, nerve impulse propagation, and chemical synthesis.

Active Transport

A cellular process that uses energy to move molecules across cell membranes against their concentration gradient.

Facilitated Diffusion

A process of passive transport, aided by transport proteins, that allows molecules to cross the cellular membrane along the concentration gradient without energy expenditure.

Concentration Gradient

The gradual difference in the concentration of solutes in a solution between two regions, leading to the movement of substances from high to low concentration.