Refer to the Above Diagrams

question 54

Multiple Choice

Refer to the above diagrams.The solid lines are production possibilities curves; the dashed lines are trading possibilities curves.The opportunity cost of producing a:

• A)pizza is 2 beers in both countries.
• B)beer is 1/2 a pizza in both countries.
• C)pizza in East Lothian is 1 beer.
• D)beer in West Lothian is 1/2 a pizza.

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Definitions:

Voltage-Gated Channels

Protein channels that open or close in response to changes in the membrane potential.

Na+ Channels

Protein pores in the membranes of cells that allow the passage of sodium ions (Na+) into or out of the cell, crucial for the initiation and propagation of electrical signals in neurons and muscle cells.

Ca2+ Channels

Protein channels in cell membranes that allow the movement of calcium ions (Ca2+) into or out of a cell, playing critical roles in cellular functions.

Na+ Channels

Specialized proteins in cell membranes that allow sodium ions to enter or leave a cell, playing a key role in generating electrical signals.