The "Efficiency" of a Heat Engine Is Defined to Be

question 61

Multiple Choice

The "efficiency" of a heat engine is defined to be

• A) work output divided by thermal energy output.
• B) thermal energy output divided by thermal energy input.
• C) thermal energy output divided by work input.
• D) work output divided by thermal energy input.

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Definitions:

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.

Active Transport

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