At Room Temperature,the Coefficient of Linear Expansion for Pyrex Glass

question 38

Multiple Choice

At room temperature,the coefficient of linear expansion for Pyrex glass is ____ that for ordinary glass.

• A)the same as
• B)more than
• C)less than
• D)stronger than

---

Definitions:

All-Or-None Contraction

A principle stating that a nerve or muscle fiber responds completely or not at all to a stimulus once the stimulus reaches a threshold value.

Muscle Fiber

A single, elongated muscle cell that can contract in response to stimulation.

Motor Unit

Single neuron and the muscle fibers it innervates.

Cholinesterase

An enzyme that breaks down acetylcholine and other choline esters in the nervous system to terminate synaptic transmission.