Question

(OHow does the relative permeability of the membrane to Na and K throughout the course of the action potential change compared with that at the resting membrane potential? From the following, select the statement(s) which are CORRECT: Select one or more: a. The number of potassium voltage-gated channels that open determine the amplitude of the action potential b. During the peak of an action potential, there is a 500x increase in the concentration of Na+ that move into the cell. c. At rest the neuronal membrane is much more permeable to K+ ions compared to Na+ ions. This is because there are far more K+ leak channels when compared to those for Na+ ions. d. For every 1 K+ voltage-gated channel open at rest, there are roughly 1185 open during the peak of an action potential. A metal ball hangs from the ceiling by an insulating thread. The ball is attracted to a positively charged rod held close (but not touching) the ball. The charge of the ball must be: Select one: a. Positive b. Negative c. Positive or Neutral d. Negative or neutral (l) Which of the following could increase the energy stored in a capacitor? Select one: a. Decreasing the charge stored on the capacitor plates. b. Decreasing the potential difference across the capacitor plates. c. Decreasing the distance between the capacitor plates. d. Decreasing the area of the plates. 3 words LX English (Malaysia Focus

Answer 1

(1 option (a) + Incluchon +4+) + (ii) (d) negative or neutral of method (ii) (C) Decreasing the distance between the capacitor plates zeoa U & Cu² (unha