Bio235 Midterm 1 181 Correctly Answered Questions Latest Update

What does it mean when we say an action potential is "all-or-none"? {Ans: Once a potential reaches threshold, it will always fire an action potential which always has the same mV of +30.}Cell {Ans: the functional unit of living organisms; four broad classes included epithelial, connective, nervous, and muscle}Myoglobin {Ans: muscle fiber protein that binds oxygen}Kinesin {Ans: motor protein that uses the energy from ATP to transport attached cellular cargo along microtubules}End-plate potential (EPP) {Ans: depolarization of motor end plate of skeletal muscle fiber in response to acetylcholine; initiates action potential in muscle plasma membrane}Thin Filament {Ans: actin filament in muscle cell}