What happens to membrane potential during manipulation 4 in the attached figure (Figure 4.13 of the textbook)? 1 Efflux of Nat Nat efflux (logarithmic scale) 0 3 Recovery when K+ is restored 2 Nat efflux reduced by removal of external K 50 100 4 Efflux decreased by metabolic inhibitors, such as dinitrophenol, which block ATP synthesis 150 Time (min) 200 5 Recovery when ATP is restored " I 250 TATI 122 O Membrane potential does not change, because the Na+-K+ ATPase does not contribute to membrane potential. O Membrane potential is hyperpolarized, because the Na+-K+ ATPase is electrogenic and hyperpolarizes membrane potential when it is active. O Membrane potential is depolarized, because the Na+-K+ ATPase is electrogenic and hyperpolarizes membrane potential when it is active. 300

Not too sure if my answer is correct.

What is an average range of millivolt difference between resting membrane potential and threshold potential?     150-300mV     1-2mV     0.005-500mV     15-30mV

Steady state vs burst activity – why is aerobic better for steady state and anaerobic better for burst

If a skeletal muscle has depleted its stores of ATP how will the altered transport properties of the following transporters affect cytosolic ion concentrations (increase, decrease, no change) relative to normal?   Skeletal Muscle Cell With Depleted ATP Stores Ion transporter Cytosolic K+ Cytosolic Na+ Cytosolic Ca2+ NKA         NCX         SERCA

Please label E,G,H-I and state function thanks

(Short Answer - 8 Sentences Max) The sodium-potassium pump maintains the electrochemical gradient across the membrane. Describe and explain how this process occurs.

Key matching terms

Options for blank one= positive or neg Blank to= into or out of Blank three= negative or positive Blank 4= into or out of Blank 5= equal to or greater thann or less than  Blank 6= more negative than or les positive than or more positive then or less negative then

I need help pleae