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Questions and Answers
What is the primary function of intracellular calcium [Ca2+]i in living cells?
What is the primary function of intracellular calcium [Ca2+]i in living cells?
- Regulating neurotransmission
- Maintaining metabolism (correct)
- Inducing necrosis
- Controlling apoptosis
What is a disadvantage of Ca2+ overload in cells?
What is a disadvantage of Ca2+ overload in cells?
- Loss of regulation and cell death (correct)
- Enhanced regulation and cell survival
- Rapid changes in [Ca2+]i levels
- Rapid movement of Ca2+ across the plasma membrane
How do cells regulate their intracellular calcium [Ca2+]i levels?
How do cells regulate their intracellular calcium [Ca2+]i levels?
- By enhanced regulation through Ca2+ overload
- By maintaining large inward gradient
- By relative impermeability of the plasma membrane (correct)
- By promoting rapid changes in [Ca2+]i with movement of little Ca2+
What is responsible for expelling Ca2+ from the cell using energy?
What is responsible for expelling Ca2+ from the cell using energy?
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What is one of the advantages of the ability to expel Ca2+ using Ca2+ ATPase?
What is one of the advantages of the ability to expel Ca2+ using Ca2+ ATPase?
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What is the resting membrane potential (RMP)?
What is the resting membrane potential (RMP)?
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What creates an electro-chemical gradient across the cell membrane?
What creates an electro-chemical gradient across the cell membrane?
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What provides the basis for cell signaling?
What provides the basis for cell signaling?
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What is the primary function of the Na-K ATPase pump on the cell membrane?
What is the primary function of the Na-K ATPase pump on the cell membrane?
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What does the resting membrane potential (RMP) express?
What does the resting membrane potential (RMP) express?
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