A Bacterium Containing Sodium Ions at a Concentration of 0

question 3

Multiple Choice

A bacterium containing sodium ions at a concentration of 0.1 mM lives in a pond that contains sodium ions at 0.005 mM.Evidently, sodium ions are entering the cell by:

• A) active transport.
• B) endocytosis.
• C) diffusion.
• D) facilitated diffusion.
• E) osmosis.

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