Question

tetrodotoxin binds to sodium channels and blocks the passage of sodium ions. Based on this information, which symptom would most likely occur in an organism exposed to tetrodotoxin?
A.blindness due to proteins in the eyes denaturing and losing functionality
B.Increase heart rate due to increased nerve impulses to the heart muscles
C.decreased appetite due to the protection of hormones that indicate fullness
D.paralysis due to lack of action potentials to signal muscle tissue

Answer 1

i thought it would be B

Answer 2

The Tetrodotoxin is said to be a sodium channel blocker.

This chemical inhibits the triggering of the potentials in the neurons by combining it to the voltage-gated sodium path in the nerve cell membranes and thus blocking the passage of the sodium ions which are responsible for the purpose of raising the phase of an action potential.