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Multiple Choice
What is the most abundant intracellular cation?
A
Calcium (Ca2+)
B
Sodium (Na+)
C
Magnesium (Mg2+)
D
Potassium (K+)
Verified step by step guidance
1
Understand the concept of intracellular cations: Cations are positively charged ions, and intracellular cations are those found within the cells.
Recognize the role of potassium (K+) in the cell: Potassium is crucial for maintaining cell function, including nerve impulse transmission and muscle contraction.
Compare the abundance of different cations: Potassium (K+) is the most abundant intracellular cation, while sodium (Na+) is more abundant extracellularly.
Consider the physiological importance: Potassium's high concentration inside cells is essential for maintaining the cell's electrical neutrality and osmotic balance.
Review the options given: Calcium (Ca2+), Sodium (Na+), and Magnesium (Mg2+) are less abundant intracellularly compared to Potassium (K+).