At rest, neurons exhibit a negative membrane potential. Among the factors that maintain this polarity, assess which is most DIRECTLY responsible for the difference between intracellular and extracellular ion concentrations?
A. movements of negatively charged proteins and nucleic acids across the membrane.
B. passive leakage of Na+ ions across the membrane.
C. passive leakage of K+ ions across the membrane.
D. movement of Na+ ions through voltage-gated Na+ channels.
E. movement of K+ ions through voltage-gated K+ channels.
C. passive leakage of K+ ions across the membrane.
You might also like to view...
Many species of birds form large flocks. What dispersion pattern describes this behavior?
A. random B. uniform C. rapid D. social E. clumped
If life exists on Mars, it is predicted that organisms would live underground and be anaerobic. Why?
What will be an ideal response?
If we think of the DNA double helix as a twisted ladder, what makes up the rungs or steps of the ladder?
A. phosphate groups and bases B. alternating phosphate groups and sugars C. phosphate groups only D. purines and pyrimidines E. sugars only
Infectious mononucleosis (mono) is caused by VZV (HHV-3).
Answer the following statement true (T) or false (F)