BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Stimulus. Any change in the environment to which an organism responds is called stimulus. The stimuli initiates an appropriate electrical impulse in the sensory neurons which transmits it to the brain or spinal cord.

Detailed explanation-2: -A change in an organism’s surroundings that causes the organism to react is called a stimulus (plural stimuli). An organism reacts to a stimulus with a response-an action or change in behavior.

Detailed explanation-3: -physiological response to stimulus. Definition: Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus.

Detailed explanation-4: -The ability of an organism or organ to react to the stimuli is known as a response.