Biol 266 Kahoot : Membrane Transport

This is the kahoot that the other classes do.

Which of the following ions is the most abundant outside a typical mammalian cell?

Na+

K+

Ca2+

Cl-

Na+

The Na+/Ca2+ antiport:

A. Imports both Na+ and Ca2+ into the cell.

B. Exports both Na+ and Ca2+ out of the cell.

C. Transports Na+ out of the cell and Ca2+ into the cell.

D. Transports Na+ into the cell and Ca2+ out of the cell.

Transports Na+ into the cell and Ca2+ out of the cell.

The electrochemical Na+ gradient established by the Na+ pumps in the plasma membrane allows animal cells to do what?

Propagate electrical signals

Import nutrients, such as sugars and amino acids

Stimulate muscle cell contraction

Control their pH

All of the Above

How do intestinal epithelial cells release glucose into the bloodstream after removing glucose from the intestinal lumen

The cells have a glucose pump that expels the glucose.

The cells run the glucose–Na+ symport proteins in reverse.

The cells have glucose channels in their plasma membrane.

The cells have glucose transporters in their plasma membrane.

The cells have glucose transporters in their plasma membrane.

What is typically true of ion channels?

They are open all the time.

They operate by active transport.

They are gated.

They hydrolyze ATP.

They are gated

What is the name of the specialized junction between a neuron and a target cell?

Dendrite

Synapse

Synaptic vesicle

Axon terminal

Synapse

Which of the following restores ion gradients across the plasma membrane of an axon after an action potential has passed

The activation of Na+/K+ pumps.

The closing of voltage-gated K+ channels.

The opening of voltage-gated Na+ channels.

The closing of Na+/K+ pumps.

The activation of Na+/K+ pumps.

The depolarization of the plasma membrane triggers the secretion of neurotransmitters by opening which of the following?

Voltage-gated Ca2+ channels in the plasma membrane.

Voltage-gated Na+ channels in the plasma membrane.

Voltage-gated K+ channels in the plasma membrane.

Neurotransmitter-gated Ca2+ channels in the plasma membrane

Voltage-gated Ca2+ channels in the plasma membrane.