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kupik [55]
3 years ago
6

1. What is a stimulus?​

Health
1 answer:
igomit [66]3 years ago
3 0

Answer:

Stimulus in biology can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal).

Explanation:

Stimulus in biology can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.

In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ. Therefore, the senses are necessary for behavior because stimuli must be sensed in order to respond.

Stimulus control can be defined as a phenomenon that arises when a living organism responds or behaves in the presence of a stimulus and in another way in the absence of a stimulus.

<em>For example, opening the door of a microwave oven as soon as its timer beeps.</em>

<em>Example II; When your body touches a hot object, you quickly move away and feel some pain subsequently. </em>

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If food or drink is not safe to eat, you cannot eat or drink. The easiest example of this is safe drinking water. We would never drink water that did not come from a reputable source. The very same principle applies to food.

Every day, people worldwide get sick from the food or drink they consume. Bacteria, viruses and parasites found in food can cause food poisoning.

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Explanation:

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