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BIOXI21: NEURAL CONTROL AND COORDINATION

340532 Which of the following is true about neural membrane?

1 Same type of ion channels present.

2 Ion channels are selectively impermeable.

3 1 and 2

4 All are wrong

BIOXI21: NEURAL CONTROL AND COORDINATION

340533 When a stimulus is applied at a site on the polarised membrane, the membrane at that site becomes freely permeable to

1

{Na}^{+}

2

K^{+}

3

{Na}^{+}

and

K^{+}

4

{Ca}^{+ +}

Explanation:

When a stimulus is applied at a site on the polarised membrane, the membrane at the site A becomes freely permeable to ${Na}^{+}$

BIOXI21: NEURAL CONTROL AND COORDINATION

340534 Assertion :
Imbalance in ${Na}^{+}, K^{+}$ and proteins generate the resting potential.
Reason :
To maintain unequal distribution of ${Na}^{+}$ and $K^{+}$ neurons use electrical energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

In a resting neuron, there are concentration gradients across the membrane for ${Na}^{+}$ and $K^{+}$ . Ions move down their gradients via channels, leading to a separation of charge that creates the resting potential. The membrane is much more permeable to $K^{+}$ than to ${Na}^{+}$ so the resting potential is close to the equilibrium potential of $K^{+}$ . Both Assertion and Reason are false.

BIOXI21: NEURAL CONTROL AND COORDINATION

340535 Read the statements and identify which is TRUE /FALSE
I. The axoplasm inside the axon contains low concentration of $K^{+}$ .
II. The axoplasm inside the axon contains high concentration of $K^{+}$ and negatively charged proteins.
III. The fluid outside the axon contains a low concentration of $K^{+}$
IV. The fluid outside the axon contains a low concentration of ${Na}^{+}$

1 I and IV are false

2 II and III are true

3 1 and 2

4 None are correct

Explanation:

Axoplasm inside axon has a high concentration of $K^{+}$ and negatively charged proteins. Fluid outside axon has low concentration of $K^{+}$ . Axoplasm inside axon as low ${Na}^{+}$ concentration.

BIOXI21: NEURAL CONTROL AND COORDINATION

340532 Which of the following is true about neural membrane?

1 Same type of ion channels present.

2 Ion channels are selectively impermeable.

3 1 and 2

4 All are wrong

BIOXI21: NEURAL CONTROL AND COORDINATION

340533 When a stimulus is applied at a site on the polarised membrane, the membrane at that site becomes freely permeable to

1

{Na}^{+}

2

K^{+}

3

{Na}^{+}

and

K^{+}

4

{Ca}^{+ +}

Explanation:

When a stimulus is applied at a site on the polarised membrane, the membrane at the site A becomes freely permeable to ${Na}^{+}$

BIOXI21: NEURAL CONTROL AND COORDINATION

340534 Assertion :
Imbalance in ${Na}^{+}, K^{+}$ and proteins generate the resting potential.
Reason :
To maintain unequal distribution of ${Na}^{+}$ and $K^{+}$ neurons use electrical energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

In a resting neuron, there are concentration gradients across the membrane for ${Na}^{+}$ and $K^{+}$ . Ions move down their gradients via channels, leading to a separation of charge that creates the resting potential. The membrane is much more permeable to $K^{+}$ than to ${Na}^{+}$ so the resting potential is close to the equilibrium potential of $K^{+}$ . Both Assertion and Reason are false.

BIOXI21: NEURAL CONTROL AND COORDINATION

340535 Read the statements and identify which is TRUE /FALSE
I. The axoplasm inside the axon contains low concentration of $K^{+}$ .
II. The axoplasm inside the axon contains high concentration of $K^{+}$ and negatively charged proteins.
III. The fluid outside the axon contains a low concentration of $K^{+}$
IV. The fluid outside the axon contains a low concentration of ${Na}^{+}$

1 I and IV are false

2 II and III are true

3 1 and 2

4 None are correct

Explanation:

Axoplasm inside axon has a high concentration of $K^{+}$ and negatively charged proteins. Fluid outside axon has low concentration of $K^{+}$ . Axoplasm inside axon as low ${Na}^{+}$ concentration.

BIOXI21: NEURAL CONTROL AND COORDINATION

340532 Which of the following is true about neural membrane?

1 Same type of ion channels present.

2 Ion channels are selectively impermeable.

3 1 and 2

4 All are wrong

BIOXI21: NEURAL CONTROL AND COORDINATION

340533 When a stimulus is applied at a site on the polarised membrane, the membrane at that site becomes freely permeable to

1

{Na}^{+}

2

K^{+}

3

{Na}^{+}

and

K^{+}

4

{Ca}^{+ +}

Explanation:

When a stimulus is applied at a site on the polarised membrane, the membrane at the site A becomes freely permeable to ${Na}^{+}$

BIOXI21: NEURAL CONTROL AND COORDINATION

340534 Assertion :
Imbalance in ${Na}^{+}, K^{+}$ and proteins generate the resting potential.
Reason :
To maintain unequal distribution of ${Na}^{+}$ and $K^{+}$ neurons use electrical energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

In a resting neuron, there are concentration gradients across the membrane for ${Na}^{+}$ and $K^{+}$ . Ions move down their gradients via channels, leading to a separation of charge that creates the resting potential. The membrane is much more permeable to $K^{+}$ than to ${Na}^{+}$ so the resting potential is close to the equilibrium potential of $K^{+}$ . Both Assertion and Reason are false.

BIOXI21: NEURAL CONTROL AND COORDINATION

340535 Read the statements and identify which is TRUE /FALSE
I. The axoplasm inside the axon contains low concentration of $K^{+}$ .
II. The axoplasm inside the axon contains high concentration of $K^{+}$ and negatively charged proteins.
III. The fluid outside the axon contains a low concentration of $K^{+}$
IV. The fluid outside the axon contains a low concentration of ${Na}^{+}$

1 I and IV are false

2 II and III are true

3 1 and 2

4 None are correct

Explanation:

Axoplasm inside axon has a high concentration of $K^{+}$ and negatively charged proteins. Fluid outside axon has low concentration of $K^{+}$ . Axoplasm inside axon as low ${Na}^{+}$ concentration.

BIOXI21: NEURAL CONTROL AND COORDINATION

340532 Which of the following is true about neural membrane?

1 Same type of ion channels present.

2 Ion channels are selectively impermeable.

3 1 and 2

4 All are wrong

BIOXI21: NEURAL CONTROL AND COORDINATION

340533 When a stimulus is applied at a site on the polarised membrane, the membrane at that site becomes freely permeable to

1

{Na}^{+}

2

K^{+}

3

{Na}^{+}

and

K^{+}

4

{Ca}^{+ +}

Explanation:

When a stimulus is applied at a site on the polarised membrane, the membrane at the site A becomes freely permeable to ${Na}^{+}$

BIOXI21: NEURAL CONTROL AND COORDINATION

340534 Assertion :
Imbalance in ${Na}^{+}, K^{+}$ and proteins generate the resting potential.
Reason :
To maintain unequal distribution of ${Na}^{+}$ and $K^{+}$ neurons use electrical energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

In a resting neuron, there are concentration gradients across the membrane for ${Na}^{+}$ and $K^{+}$ . Ions move down their gradients via channels, leading to a separation of charge that creates the resting potential. The membrane is much more permeable to $K^{+}$ than to ${Na}^{+}$ so the resting potential is close to the equilibrium potential of $K^{+}$ . Both Assertion and Reason are false.

BIOXI21: NEURAL CONTROL AND COORDINATION

340535 Read the statements and identify which is TRUE /FALSE
I. The axoplasm inside the axon contains low concentration of $K^{+}$ .
II. The axoplasm inside the axon contains high concentration of $K^{+}$ and negatively charged proteins.
III. The fluid outside the axon contains a low concentration of $K^{+}$
IV. The fluid outside the axon contains a low concentration of ${Na}^{+}$

1 I and IV are false

2 II and III are true

3 1 and 2

4 None are correct

Explanation:

Axoplasm inside axon has a high concentration of $K^{+}$ and negatively charged proteins. Fluid outside axon has low concentration of $K^{+}$ . Axoplasm inside axon as low ${Na}^{+}$ concentration.

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