A Time-Series Graph Displays the Price of Gold

question 183

Multiple Choice

A time-series graph displays the price of gold.The slope of the line is negative for periods when the

• A) price of gold is falling.
• B) price of gold is rising.
• C) quantity of gold is falling.
• D) price of gold is low and not changing.
• E) price of gold fluctuates.

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Definitions:

Concentration Gradient

A difference in the concentration of a substance across a distance, leading to substances moving from an area of high concentration to one of lower concentration.

Carrier Molecule

A protein that facilitates the transport of specific substances across a cell membrane by changing its shape.

Cyanide

A highly toxic chemical compound that can prevent cells from using oxygen, leading to rapid cell death and potentially fatal poisoning.

ATP

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