Voltage-gated ion channels underlie the function of electrically excitable cells, such as nerve and muscle cells. Which statement is true about voltage-gated ion channels?1. Voltage-gated ion channels involve a conformational change of the transmembrane protein, which occurs in response to membrane voltage that changes the channel's permeability to ion flow through the channel.2. Voltage-gated ion channels vary in terms of how rapidly they respond to changes in membrane potential. 3. Voltage-gated ion channels open and close in response to changes in membrane potential.4. All of these choices are correct.

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?