In a Certain Thermodynamic Process,1000 Cal of Heat Are Added

question 74

Multiple Choice

In a certain thermodynamic process,1000 cal of heat are added to a gas confined in a cylinder.At the same time,1000 J of work are done by the gas as it expands.The increase in internal energy of the gas is

• A)zero
• B)3186 J
• C)-239 J
• D)5186 J
• E)1239 J

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Definitions:

Inhibitory Postsynaptic Potential

A decrease in the potential of the postsynaptic neuronal membrane, making it less likely to generate an action potential.

Resting Potential

Resting potential refers to the electric potential difference across the neuronal membrane when the neuron is not actively sending a signal.

Absolute Refractory Period

The period immediately following the firing of a nerve fiber when it cannot be stimulated to fire again, no matter how strong the incoming signal.

Action Potential

A momentary change in electrical potential on the surface of a neuron that occurs when it is stimulated and is capable of transmitting a signal along the neuron.