If a Cell Were Bathed in an Extracellular Solution High

question 51

Multiple Choice

If a cell were bathed in an extracellular solution high in Na⁺, what type of ion movement would maintain the proper balance of Na⁺ ions between the inside and the outside of the cell?

• A) Active transport of Na⁺ against its concentration gradient
• B) Facilitated diffusion of Na⁺ through ion channels
• C) Secondary active transport of K⁺
• D) Simple diffusion of Na⁺
• E) Simple diffusion of K⁺

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Definitions:

Herfindahl Index

A measure of market concentration that squares and then sums the market share percentages of all firms within the industry.

Market Shares

The proportion of a market controlled by a particular company, product, or service in relation to total sales in the market.

Herfindahl Index

A measure of market concentration that sums the squares of the market shares of all firms in the industry.

Market Shares

The portion of a market controlled by a particular company or product, often expressed as a percentage.