M.R.S.
Biology: Edexcel IGCSE, topic 1.1.2
Movement, Respiration and Sensitivity
These are three features of of all living organisms:
Movement
- Movement is an action by an organism or part of an organism causing a change of position or place.
- For example, climbing plants move their tendrils (growths from their stems) around fixed objects so that they can climb walls.
Respiration
- Respiration is the chemical reactions in cells that break down nutrient molecules and release energy for metabolism (chemical reactions in cells).
- For example, when a human eats an apple, the sugars in the apple are broken down to release energy.
Sensitivity
- Sensitivity is the ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.
- For example, a deer detects movement in the nearby grass and runs away from a potential predator.
Test yourself on M.R.S.
Energy being released from food is an example of what?
Which of these is NOT an example of sensitivity?