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When the Typewriter and Telephone Were First Used in Business

question 45

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When the typewriter and telephone were first used in business in the 1880s,


Definitions:

Hyperpolarization

A state in which the membrane potential of a cell becomes more negative than its normal resting potential.

Blood pH

The measurement of acidity or alkalinity in the blood, essential for maintaining homeostasis and normal bodily function.

Respiratory Center

A region of the brain stem involved in the regulation of breathing rhythm and depth.

Intracellular Enzymes

Enzymes that function within the cells to facilitate metabolic processes and biochemical reactions.

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