Biology
Grade-8
Easy
Question
Identify the type of signal from the picture
- Chemical signal
- Pain signal
- Mechanical signal
- Electromagnetic signal
Hint:
Skin's sensory cells respond to the pressure of touch. And sensory cells in the inner ear and brain react to the movement of sound waves.
The correct answer is: Mechanical signal
- Mechanical signaling refers to a process where a signal is triggered by a mechanical force such as shear stress or a pull/push applied to biomolecules.
- Usually, the application of such force would induce a conformational change in the protein/receptor, thus exposing functional domains to the environment.
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