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Punjab 12th Class Biology Chapter 17 Coordination and Control Mcqs Test Online

Question 1 of 7

Biology

1. The function of the nerve gas is to inhibit the function of:

1.Atropine

2.Acetylcholine

3.Noadrenaline

4.Cholinesterase

Question 1 of 7

Question 2 of 7

2. What will happen it the receptor sites on the post-synaptic membrane are blocked by a drug at the neuromuscular junction?

1.Muscle paralysis

2.Inhibition of acetylcholine

3.Inhibition of cholinesterase

4.Muscle contraction

Question 2 of 7

Question 3 of 7

3. Impulses travel very rapidly along nerves to the leg of a man. Which fact accounts for the speed at which they travel?

1.There is a high concentration of Na⁺ ions inside the axons

2.There is a potential difference across the axon membranes

3.The nerves contain myelinated fibres

4.A nerve impulse is an all or none phenomenon

Question 3 of 7

Question 4 of 7

4. Depolarization of an axon is produced by the movement of:

1.Na⁺ and K⁺ within the axon toward the axon terminal

2.K⁺ into the axon and Na⁺ out of the axon

3.Na⁺ into the axon and K⁺ out of the axon

4.Na⁺ into the axon to bond with K⁺

Question 4 of 7

Question 5 of 7

5. Which of these are the first and last elements in a spinal reflex?

1.Axon and dendrite

2.Ventral horn and dorsal horn

3.Motor neuron and sensory neuron

4.Sense organ and muscle effector

Question 5 of 7

Question 6 of 7

6. Where are neurotransmitter receptors located?

1.On the postsynaptic membrane

2.At nodes of Ranvier

3.In the myelin sheath

4.On the nuclear membrane

Question 6 of 7

Question 7 of 7

7. The cell transmits impulses from the:

1.Receptor cells to the effector organ

2.Spinal cord to the effector organ

3.Receptor cells to the spinal cord

4.Effector organ to the spinal cord

Question 7 of 7

Test By Subject	Punjab
Test By Topics	12th Class Biology

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Punjab 12th Class Biology Chapter 17 Coordination and Control Mcqs Test Online

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Punjab 12th Class Biology Chapter 17 Coordination and Control Mcqs Test Online