QBManager

Neural Control and Coordination(NCERT)

286536 Identify the correct match of types of neurons with its location.

1 (i) & (ii) only

2 (i) & (iii) only

3 (ii) & (iii) only

4 All the three.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286537 A bipolar neuron has

1 2 dendrites and1 axon

2 2 axons and1 dendrite

3 1 dendrite and1 axon

4 2 axons and2 dendrites

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286538 Sodium-Potassium pump across membrane, actively transports

1

2 Na

ions outwards and

3 K

ions into the cell.

2

3 Na

ions outwards and

2 K

ions into the cell.

3

2 K

ions outwards and

3 Na

ions into the cell.

4

3 K

ions outwards and

2 Na

ions into the cell.

Explanation:

(b) The ionic concentration gradients across the resting membrane are maintained by active transport of ions by sodium-potassium pump which transports $3 Na +$ outwards for $2 K^{+}$ into the cell.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286539 During conduction of nerve impulse

1

N a^{+}

moves into axoplasm

2

N a^{+}

moves out of axoplasm

3

K^{+}

moves into axoplasm

4

C a^{+ +}

moves into axoplasm

Explanation:

(a) During conduction of nerve impulse, $N a^{+}$ moves into the axoplasm. Axoplasm is a jelly like substance that contains both inorganic and organic matter in a axon. For an inactive neuron, the axoplasm has an overall negative charge. This is because proteins, amino acids, phosphates, and other negatively-charged entities inside the cell cannot cross the selectively-permeable cell membrane. Two types of positively-charged ions, potassium $(K^{+}$ ) and sodium $(N a^{+})$ , can cross the cell membrane through selective ion channels. Normally there are more potassium ions inside the cell than outside, whereas there are more sodium ions outside the cell than inside.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286540 A polarised neuron is said to be in

1 action potential

2 resting potential

3 conducting stimulus

4 None of these

NCERT Page-317

Neural Control and Coordination(NCERT)

286536 Identify the correct match of types of neurons with its location.

1 (i) & (ii) only

2 (i) & (iii) only

3 (ii) & (iii) only

4 All the three.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286537 A bipolar neuron has

1 2 dendrites and1 axon

2 2 axons and1 dendrite

3 1 dendrite and1 axon

4 2 axons and2 dendrites

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286538 Sodium-Potassium pump across membrane, actively transports

1

2 Na

ions outwards and

3 K

ions into the cell.

2

3 Na

ions outwards and

2 K

ions into the cell.

3

2 K

ions outwards and

3 Na

ions into the cell.

4

3 K

ions outwards and

2 Na

ions into the cell.

Explanation:

(b) The ionic concentration gradients across the resting membrane are maintained by active transport of ions by sodium-potassium pump which transports $3 Na +$ outwards for $2 K^{+}$ into the cell.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286539 During conduction of nerve impulse

1

N a^{+}

moves into axoplasm

2

N a^{+}

moves out of axoplasm

3

K^{+}

moves into axoplasm

4

C a^{+ +}

moves into axoplasm

Explanation:

(a) During conduction of nerve impulse, $N a^{+}$ moves into the axoplasm. Axoplasm is a jelly like substance that contains both inorganic and organic matter in a axon. For an inactive neuron, the axoplasm has an overall negative charge. This is because proteins, amino acids, phosphates, and other negatively-charged entities inside the cell cannot cross the selectively-permeable cell membrane. Two types of positively-charged ions, potassium $(K^{+}$ ) and sodium $(N a^{+})$ , can cross the cell membrane through selective ion channels. Normally there are more potassium ions inside the cell than outside, whereas there are more sodium ions outside the cell than inside.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286540 A polarised neuron is said to be in

1 action potential

2 resting potential

3 conducting stimulus

4 None of these

NCERT Page-317

Neural Control and Coordination(NCERT)

286536 Identify the correct match of types of neurons with its location.

1 (i) & (ii) only

2 (i) & (iii) only

3 (ii) & (iii) only

4 All the three.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286537 A bipolar neuron has

1 2 dendrites and1 axon

2 2 axons and1 dendrite

3 1 dendrite and1 axon

4 2 axons and2 dendrites

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286538 Sodium-Potassium pump across membrane, actively transports

1

2 Na

ions outwards and

3 K

ions into the cell.

2

3 Na

ions outwards and

2 K

ions into the cell.

3

2 K

ions outwards and

3 Na

ions into the cell.

4

3 K

ions outwards and

2 Na

ions into the cell.

Explanation:

(b) The ionic concentration gradients across the resting membrane are maintained by active transport of ions by sodium-potassium pump which transports $3 Na +$ outwards for $2 K^{+}$ into the cell.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286539 During conduction of nerve impulse

1

N a^{+}

moves into axoplasm

2

N a^{+}

moves out of axoplasm

3

K^{+}

moves into axoplasm

4

C a^{+ +}

moves into axoplasm

Explanation:

(a) During conduction of nerve impulse, $N a^{+}$ moves into the axoplasm. Axoplasm is a jelly like substance that contains both inorganic and organic matter in a axon. For an inactive neuron, the axoplasm has an overall negative charge. This is because proteins, amino acids, phosphates, and other negatively-charged entities inside the cell cannot cross the selectively-permeable cell membrane. Two types of positively-charged ions, potassium $(K^{+}$ ) and sodium $(N a^{+})$ , can cross the cell membrane through selective ion channels. Normally there are more potassium ions inside the cell than outside, whereas there are more sodium ions outside the cell than inside.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286540 A polarised neuron is said to be in

1 action potential

2 resting potential

3 conducting stimulus

4 None of these

NCERT Page-317

Neural Control and Coordination(NCERT)

286536 Identify the correct match of types of neurons with its location.

1 (i) & (ii) only

2 (i) & (iii) only

3 (ii) & (iii) only

4 All the three.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286537 A bipolar neuron has

1 2 dendrites and1 axon

2 2 axons and1 dendrite

3 1 dendrite and1 axon

4 2 axons and2 dendrites

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286538 Sodium-Potassium pump across membrane, actively transports

1

2 Na

ions outwards and

3 K

ions into the cell.

2

3 Na

ions outwards and

2 K

ions into the cell.

3

2 K

ions outwards and

3 Na

ions into the cell.

4

3 K

ions outwards and

2 Na

ions into the cell.

Explanation:

(b) The ionic concentration gradients across the resting membrane are maintained by active transport of ions by sodium-potassium pump which transports $3 Na +$ outwards for $2 K^{+}$ into the cell.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286539 During conduction of nerve impulse

1

N a^{+}

moves into axoplasm

2

N a^{+}

moves out of axoplasm

3

K^{+}

moves into axoplasm

4

C a^{+ +}

moves into axoplasm

Explanation:

(a) During conduction of nerve impulse, $N a^{+}$ moves into the axoplasm. Axoplasm is a jelly like substance that contains both inorganic and organic matter in a axon. For an inactive neuron, the axoplasm has an overall negative charge. This is because proteins, amino acids, phosphates, and other negatively-charged entities inside the cell cannot cross the selectively-permeable cell membrane. Two types of positively-charged ions, potassium $(K^{+}$ ) and sodium $(N a^{+})$ , can cross the cell membrane through selective ion channels. Normally there are more potassium ions inside the cell than outside, whereas there are more sodium ions outside the cell than inside.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286540 A polarised neuron is said to be in

1 action potential

2 resting potential

3 conducting stimulus

4 None of these

NCERT Page-317

Neural Control and Coordination(NCERT)

286536 Identify the correct match of types of neurons with its location.

1 (i) & (ii) only

2 (i) & (iii) only

3 (ii) & (iii) only

4 All the three.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286537 A bipolar neuron has

1 2 dendrites and1 axon

2 2 axons and1 dendrite

3 1 dendrite and1 axon

4 2 axons and2 dendrites

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286538 Sodium-Potassium pump across membrane, actively transports

1

2 Na

ions outwards and

3 K

ions into the cell.

2

3 Na

ions outwards and

2 K

ions into the cell.

3

2 K

ions outwards and

3 Na

ions into the cell.

4

3 K

ions outwards and

2 Na

ions into the cell.

Explanation:

(b) The ionic concentration gradients across the resting membrane are maintained by active transport of ions by sodium-potassium pump which transports $3 Na +$ outwards for $2 K^{+}$ into the cell.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286539 During conduction of nerve impulse

1

N a^{+}

moves into axoplasm

2

N a^{+}

moves out of axoplasm

3

K^{+}

moves into axoplasm

4

C a^{+ +}

moves into axoplasm

Explanation:

(a) During conduction of nerve impulse, $N a^{+}$ moves into the axoplasm. Axoplasm is a jelly like substance that contains both inorganic and organic matter in a axon. For an inactive neuron, the axoplasm has an overall negative charge. This is because proteins, amino acids, phosphates, and other negatively-charged entities inside the cell cannot cross the selectively-permeable cell membrane. Two types of positively-charged ions, potassium $(K^{+}$ ) and sodium $(N a^{+})$ , can cross the cell membrane through selective ion channels. Normally there are more potassium ions inside the cell than outside, whereas there are more sodium ions outside the cell than inside.

NCERT Page-317 / N-232

Neural Control and Coordination(NCERT)

286540 A polarised neuron is said to be in

1 action potential

2 resting potential

3 conducting stimulus

4 None of these

NCERT Page-317