Which choice represents transport proteins in a neuron? a. Voltage-gated channels and passive transporters b. Passive...
Which choice represents transport proteins in a neuron?
a. Voltage-gated channels and passive transporters
b. Passive transporters and sodium-potassium cotransporters
c. Sodium-potassium cotransporters, passive transporters, and voltage-gated channels
d. Voltage-gated channels and passive transporters
e. Sodium-potassium cotransporters and voltage-gated channels
Homework Answers
Option a and d are same but incorrect as there is no passive transporters are involved so first four options are incorrect and correct option is option e "Sodium-potassium.....................................voltage gated channel"
Correct option e, Na-K co-transporters are involved and voltage gated Ca channel and ATPs are used in this process and no passive transporters.
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Which choice represents transport proteins in a neuron?
a. Voltage-gated channels and passive transporters
b. Passive...
Action potentials do not occur in the soma of a neuron because a.it lacks voltage gated...
Action potentials do not occur in the soma of a neuron because a.it lacks voltage gated sodium channels b.it lacks leaky potassium channels c.it lacks leaky sodium channels d.it lacks chemically gated channels
A mutation causes the incorporation of fewer voltage-gated sodium channels into the membrane of a neuron....
A mutation causes the incorporation of fewer voltage-gated sodium channels into the membrane of a neuron. a) What effect will this mutation have on synaptic potentials if this neuron receives excitatory input? b) What effect will this mutation have in the axon hillock area?
choices for A: Na+/K+ pumps, voltage gated K+ channels, voltage gated Ca+ channels, voltage gated Na+...
choices for A: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
choices for B: bidirectionally, unidirectionally
choices for C: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
choices for D: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
Consider this graph illustrating the generation of an action potential across the plasma membrane of a stimulated neuron. +40 ACTION POTENTIAL plasma membrane potential...
Voltage-gated calcium channels are localized to which part of the neuron? axon terminal axon dendrites and...
Voltage-gated calcium channels are localized to which part of the neuron? axon terminal axon dendrites and soma all over the plasma membrane of the neuron
3. Many neurons contain "delayed K channels". Like voltage-gated Nat channels, these voltage-gated K+ channels open in response to a rise in membrane potential and then undergo inactivati...
3. Many neurons contain "delayed K channels". Like voltage-gated Nat channels, these voltage-gated K+ channels open in response to a rise in membrane potential and then undergo inactivation. However, opening of the voltage-gated K channels lags behind opening of the voltage-gated Na channels. a) Why does neuronal function require the voltage-gated K channels to open more slowly than the voltage-gated Na channels? b) Compared to a neuron that lacks voltage-gated K channels, what differences would you expect in the shape...
An action potential does not move back wards in the axon because.. a.Voltage-gated sodium channels behind...
An action potential does not move back wards in the axon because.. a.Voltage-gated sodium channels behind the action potential are inactivated. b. Potassium leak channels no longer let potassium ions through c. Voltage-gated sodium channels are open d. Mechanically-gated channels prevent outflow of sodium e. Voltage-gated potassium channels are closed
Which type of membrane transport protein can perform either passive or active transport? Choose one: A....
Which type of membrane transport protein can perform either passive or active transport? Choose one: A. transporters B. channels C. both channels and transporters D. Neither type of membrane transport protein can perform both passive and active transport.
QUESTION 18 Gated ion channels include each of the following except O A. voltage-gated channels. OB....
QUESTION 18 Gated ion channels include each of the following except O A. voltage-gated channels. OB. mechanosensitive channels. O C. ligand-gated channels. OD. potassium leak channels. E. All of these are types of gated channels
Q2. The Na+/K+ pump and voltage gated K+ channels both transport K+ across the membrane. A)...
Q2. The Na+/K+ pump and voltage gated K+ channels both transport K+ across the membrane. A) Compare and contrast these two mechanisms for K+ transport indicating important functional and structural differences. B) Describe the process for putting a voltage gated K+ channel in the membrane starting at the ribosome and ending at the plasma membrane.
The pancreatic B cells that release insulin have potassium channels that close when ATP levels are...
The pancreatic B cells that release insulin have potassium channels that close when ATP levels are high. How does closing potassium channels lead to exocytosis of insulin (Hint: it's the same mechanism as in neurons.) A Question 4 (2 points) Voltage-gated sodium channels need to inactivate, but voltage-gated potassium channels do not. Why? Question 5 (1 point) The convergence of two primary sensory neurons onto a secondary neuron is an example of temporal summation spatial summation
choices for A: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
choices for B: bidirectionally, unidirectionally
choices for C: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
choices for D: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
Consider this graph illustrating the generation of an action potential across the plasma membrane of a stimulated neuron. +40 ACTION POTENTIAL plasma membrane potential...
3. Many neurons contain "delayed K channels". Like voltage-gated Nat channels, these voltage-gated K+ channels open in response to a rise in membrane potential and then undergo inactivation. However, opening of the voltage-gated K channels lags behind opening of the voltage-gated Na channels. a) Why does neuronal function require the voltage-gated K channels to open more slowly than the voltage-gated Na channels? b) Compared to a neuron that lacks voltage-gated K channels, what differences would you expect in the shape...
Which type of membrane transport protein can perform either passive or active transport? Choose one: A. transporters B. channels C. both channels and transporters D. Neither type of membrane transport protein can perform both passive and active transport.
QUESTION 18 Gated ion channels include each of the following except O A. voltage-gated channels. OB. mechanosensitive channels. O C. ligand-gated channels. OD. potassium leak channels. E. All of these are types of gated channels
Q2. The Na+/K+ pump and voltage gated K+ channels both transport K+ across the membrane. A) Compare and contrast these two mechanisms for K+ transport indicating important functional and structural differences. B) Describe the process for putting a voltage gated K+ channel in the membrane starting at the ribosome and ending at the plasma membrane.
The pancreatic B cells that release insulin have potassium channels that close when ATP levels are high. How does closing potassium channels lead to exocytosis of insulin (Hint: it's the same mechanism as in neurons.) A Question 4 (2 points) Voltage-gated sodium channels need to inactivate, but voltage-gated potassium channels do not. Why? Question 5 (1 point) The convergence of two primary sensory neurons onto a secondary neuron is an example of temporal summation spatial summation
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