Which of the Following Best Describes the Function of Gap

question 12

Multiple Choice

Which of the following best describes the function of gap junctions?

• A) They occur when peripheral membrane proteins from neighboring cells line up thereby permitting the exchange of water, small ions, and small molecules.
• B) They are second messengers that activate protein kinases. The protein kinases then activate or deactivate other proteins.
• C) They are intracellular receptors, which associate with signals entering the cell, and often regulate transcriptional processes.
• D) They create direct connections between the cytoplasm of adjacent animal cells thereby permitting the exchange of water, small ions, and small molecules.

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Definitions:

Production Inefficiency

A situation where a firm or economy is not producing at the lowest possible cost or maximally utilizing its resources, leading to waste or lost potential output.

Opportunity Cost

Sacrificing potential opportunities from a range of alternatives by settling on one.

Present Consumption

The portion of current income or resources that is used for consumption, rather than saving or investing.

Capital

Resources or assets used in the production of goods and services, such as machinery, buildings, and equipment.