Multiple Choice
Excitable cells are able to conduct action potentials because they have
A) receptors for neurotransmitters.
B) tight junctions.
C) ligand-gated channels.
D) voltage-gated channels.
Correct Answer:

Verified
Correct Answer:
Verified
Q7: Some individuals inherit a gene that results
Q8: An increase in extracellular potassium ion from
Q9: Ribosomes are very important organelles within the
Q10: Ion channels open and close in response
Q11: The cardiac drug digitalis enhances myocardial contraction,because
Q12: The benefit of glycolysis is that this
Q13: The resting membrane potential in nerve and
Q15: GTP-binding proteins (G-proteins)function to<br>A) activate receptors on
Q16: During conditions of prolonged insufficient oxygen availability
Q17: Cell-to-cell communication through secretion of chemical signals