ANSWER ALL In the coupled transport of Na^+ and glucose, the transporter (a) car

Question

ANSWER ALL In the coupled transport of Na^+ and glucose, the transporter (a) carries out antiport of Na^+ and glucose. (b) changes shape based on whether it is bound Na^+ and glucose. (c) transports only when it simultaneously binds to Na^+ or glucose. (d) Uses the K^+ gradient to transport Na^+ and glucose. Which the following best describes the behavior of channels exposed to a change in membrane of potential? (a) Some channels remain closed and some open completely. (b) All channels open completely. (c) All channels open partly, to the same degree. (d) All channels open partly, each to a different degree. Which of the following is NOT true about the membrane potential of a resting cell? (a) The membrane potential is negative. (b) There is an unequal distribution of charge across the membrane. (c) It results from the activity of the Na^+ K^+ pump. (d) The cell is depolarized. If Na^+ channels are opened in a cell that was previously at rest, how will the resting membrane potential be affected? (a) The membrane potential is not affected by Na^+ b) It becomes more negative. (c) It becomes more positive. (d) It is permanently reset. Which the following is required for the secretion of neurotransmitters in response to an action of potential? (a) neurotransmitter receptors (b) Na^+ -K^+ pumps (c) voltage-gated C_a2^+ channels (d) voltage-gated K^+ channels which of the following is NOT true about an action potential? (a) They are self-propagating and amplifying. (b) The initial stimulus must be below the threshold level. (c) They result in depolarization of the cell. (d) They only move in one direction down an axon. Which of the following would inhibit a cell from firing an action potential? (a) Opening of Cl^- channels (b) Inactivation of K^+ leak channels (c) Binding of acetylcholine (d) Opening of Ca^2+ channels oppose that a disorder caused an increase in Na^+ in the extracellular fluid surrounding your neurons. Hat effect if any would this have on the neuron? (a) It would be more likely to fire an action potential. (b) It would have a more positive action potential peak. (c) It would use less energy to drive the Na^+ K^+ pump. (d) There would be no effect.

Explanation / Answer

1)in the coupled transport of Na+ and glucose the transporter

c)transports only when it simultaneously binds Na and glucose

2)a)some channels remain closed and some open completely

3)b)There is an unequal distribution of charge across the membrane as it is equally distributed

4)d)It is permanently reset due to positive and negative both things happening together.

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