The given paragraph describes the resting state of a nerve fiber.
When a neuron is resting , the axonal membrane is comparatively.....P........to potassium ions `(K^+)` and .....Q.... to sodium ions `(Na^+)` Similarly, the membrane is .....R....to negatively charged proteins present in the axoplasm .contains high concentration of ........s....... and ......T........P, Q, R ,S and are respectively

Assertion : When a neuron is not conducting any impulse, i.e. resting, the axoplasm inside the axon contains high concentration of K^(+) and negatively charged proteins and low concentration of Na^(+) . Reason : In resting, the axonal membrane is comparatively more permeable to K^(+) ions and nearly impermeable to Na^(+) ions. Similarly, the membrane is impermeable to negatively charged proteins present in axoplasm

Read the given statements and select the correct ones. (i)Autonomic neural system transmits impulses from the CNS to the voluntary organs and striated muscles of the body. (ii)Unmyelinated nerve fibres do not have Schwann cells which form the myelin sheath. (iii)Axonal membrane of a neuron while not conducting any impulse is comparatively more permeable to potassium ions (K^+) than to sodium ions (Na^+) (iv)A synapse is formed by the membranes of presynaptic neuron and a post synaptic neuron.

Read the given statements and select the correct ones. (i)Autonomic neural system transmits impulses from the CNS to the voluntary organs and striated muscles of the body. (ii)Unmyelinated nerve fibres do not have Schwann cells which form the myelin sheath. (iii)Axonal membrane of a neuron while not conducting any impulse is comparatively more permeable to potassium ions (K^+) than to sodium ions (Na^+) (iv)A synapse is formed by the membranes of presynaptic neuron and a post synaptic neuron.

Mechanism of blood clotting is given below : An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation . An enzyme complex, …………P……… is formed by a series of linked enzyme reactions (...........Q.........Process) involving a number of factors present in the plasma in an inactive state. This enzyme complex is required for formation of ...............R............ ..........S........... ions play a very important role in clotting . Identify the correct option that represents P, Q, R , and S .

Mechanism of blood clotting is given below : An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation . An enzyme complex, …………P……… is formed by a series of linked enzyme reactions (...........Q.........Process) involving a number of factors present in the plasma in an inactive state. This enzyme complex is required for formation of ...............R............ ..........S........... ions play a very important role in clotting . Identify the correct option that represents P, Q, R , and S .

The pH values of four solutions P Q R and S are 7.8,1.0,13.0 and 1.4 respectively. The solution having highest hydrogen ion concentration among them is: