While on a food tour in Asia, a traveler accidentally ingests TTX (a poison that blocks voltage-sensitive Nat channels). This drug would: O A Stop the heart from beating O B Depolarize resting membrane potential C Prolong the action potential plateau phase D Inhibit pacemaker potential

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers