Cells Use Membranes to Help Maintain Set Ranges of Ion

question 29

Multiple Choice

Cells use membranes to help maintain set ranges of ion concentrations inside and outside the cell.Which of the following ions is the most abundant inside a typical mammalian cell?

• A)Na⁺
• B)K⁺
• C)Ca²⁺
• D)Cl⁻

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Definitions:

Excretion

The process of removing metabolic waste products and other non-useful materials from an organism to maintain internal homeostasis.

Tubular Reabsorption

The process by which the kidneys reclaim water and solutes from the tubular fluid and return them to the blood.

Nephron

The functional unit of the kidney, responsible for filtering blood and forming urine through processes of filtration, reabsorption, and secretion.

Filtered Molecules

Substances that have passed through a filtering process, often referring to molecules separated based on size or charge, especially in biological and chemical contexts.