Question

Which among the following life processes is electrochemical in origin?

• A. Breathing
• B. Digestion
• C. Transmission of sensory signals
• D. Blood circulation

Answer 1

The Correct Option is C

Among the given options, the life process that is electrochemical in origin is the "Transmission of sensory signals." This is because: 

• Sensory signals are transmitted through neurons, which rely on electrical impulses to communicate.
• This process involves the movement of ions such as sodium (Na⁺) and potassium (K⁺) across neuron membranes, creating an electrical charge difference.
• The propagation of an action potential, which is the electrical signal, depends on these ionic movements, making it an electrochemical process.

So, the correct option is (C): Transmission of sensory signals

Answer 2

The transmission of sensory signals is a complex process that involves electrochemical processes within the nervous system. This process is crucial for the communication between sensory receptors, neurons, and the brain.

Sensory signals, such as touch, pain, and temperature, are detected by specialized sensory receptors in the body. These receptors convert external stimuli into electrical signals, which are then transmitted through neurons. This transmission relies on the movement of ions, such as sodium (Na⁺) and potassium (K⁺), across the neuronal membranes.

Neurons maintain a difference in ion concentration across their membranes, creating an electrochemical gradient. When a sensory signal is received, it triggers a series of events known as action potentials, in which ion channels open, allowing ions to flow in and out of the neuron. This movement of ions generates an electrical current that propagates along the length of the neuron.

The action potential travels along the axon to the synapse, where it is transmitted to the next neuron or muscle cell via chemical neurotransmitters. This electrochemical transmission of signals ensures that sensory information is rapidly conveyed from the periphery to the central nervous system, where it can be processed and interpreted.

Overall, the movement of ions across neuronal membranes plays a fundamental role in the proper functioning of the nervous system, allowing organisms to respond to stimuli in a timely and coordinated manner.