Portage Learning BIOD 152 Final Exam

A"empt History A"empt Time Score LATEST A"empt 1 56 minutes 25 out of 140 * Score for this quiz: 25 out of 140 * Submi"ed Oct 11 at 2:02am This a"empt took 56 minutes. The Final Exam is composed of ques!ons based upon material presented in the en!re course. It will assess your level of mastery of the course content and goals. The format of the exam is similar to past module exams. You are about to begin a !med exam. Please make sure you are in a suitable, quiet place, free from distrac!on. Your Answer: Ques!on 1 Not yet graded / 5 pts True or False; If false, explain why the statement is false: Bipolar neurons have a central cell body with two extensions. True Answer: True Your Answer: Ques!on 2 Not yet graded / 5 pts List the phases of an ac!on poten!al in order. Phase 1: Res!ng potentail: when both gates of sodium and potassium are closed. Phase 2: Depolariza!on: when sodium gate opens and potassium gate closes. Na+ ions rush into axon during the poten!al ac!on of depolariza!on of ac!on. Cause the voltage to zero then up to +40mV Phase 3: Repolariza!on: when sodium gate closes and potassium gate opens. K+ ions rush out of axon, and return nega!ve charge inside of axon. Phase 4: A#erpolariza!on or hyperpolariza!on: when potassium gate begins to close slowly. There is an undershoot of poten!al cause the voltage drop below -70mV then return back to -70mV as the res!ng state begin